{"title":"US No. 58 Bur – Busch Straight Fissure Carbide, Made in Germany","description":"\u003cp\u003eThe \u003cstrong\u003eUS No. 58\u003c\/strong\u003e is the American number for a straight fissure bur with a 1.2 mm head (ISO size 012): a parallel-sided cylinder with a flat end, so it cuts straight walls and a flat floor in one motion. Busch \u0026amp; Co. manufactures it in Germany as \u003cstrong\u003eBusch No. 21 012\u003c\/strong\u003e and \u003cstrong\u003eBusch No. 21L 012\u003c\/strong\u003e. Every US No. 58 on this page is a genuine Busch instrument and ships from our US warehouse.\u003c\/p\u003e\u003ch2\u003eWhich US No. 58 Do You Need?\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eUS No.\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eBusch No.\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eMaterial\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eCut\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eShank\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eBest for\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003ePack\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-012-fg-pack-of-6\"\u003e58\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21 012\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFG\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHigh-speed handpiece\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-fissure-bur-21-012-ra-fiss-cyl-6pk\"\u003e58\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21 012\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eRA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSlow-speed contra-angle\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-flat-dental-bur-21-012-hp-pack-of-6\"\u003e58\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21 012\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHP\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eStraight handpiece: laboratory and denture work\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21l-012-fg-long-pack-of-6\"\u003e58L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21L 012\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFG\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eLonger head for deeper preparations\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21l-012-hp-long-pack-of-6\"\u003e58L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21L 012\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHP\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eLonger head for deeper preparations\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp style=\"font-size:13px;\"\u003eFG (friction grip, 1.6 mm shank, high-speed handpiece). RA (latch, 2.35 mm shank, contra-angle). HP (2.35 mm shank, straight handpiece). See the \u003ca href=\"\/pages\/busch-bur-size-chart\"\u003eBusch Bur Size Chart\u003c\/a\u003e for head and shank dimensions.\u003c\/p\u003e\u003ch2\u003eClinical Uses of the US No. 58\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCavity preparation:\u003c\/strong\u003e opening through enamel and establishing the straight walls and flat floor of Class I and Class II preparations, including proximal boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestoration removal:\u003c\/strong\u003e cutting out old amalgam and composite; crosscut versions clear the debris instead of packing with it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSectioning:\u003c\/strong\u003e dividing crowns and multi-rooted teeth, where the surgical-length versions add reach and visibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and denture work:\u003c\/strong\u003e the HP carbide and steel versions trim acrylic, adjust denture bases and reduce plaster models in the straight handpiece.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAt 1.2 mm the No. 58 is the standard operative size.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003e58L\u003c\/strong\u003e (Busch 21L 012) carries a longer cutting head for deeper boxes and taller walls.\u003c\/p\u003e\u003cp\u003eThe No. 58 is plain-cut; its crosscut twin in the same shape and size is the \u003ca href=\"\/collections\/us-558-bur\"\u003eUS No. 558 (Busch 36 012)\u003c\/a\u003e. Crosscut blades cut faster and clear debris; plain-cut blades leave a smoother wall.\u003c\/p\u003e\u003ch2\u003eSpeed and Technique\u003c\/h2\u003e\u003cp\u003eRun the FG versions in the high-speed handpiece with continuous water spray and light, intermittent pressure; let the blades do the work. HP versions run at laboratory speed in the straight handpiece. Maximum recommended speeds for every Busch shape are in our \u003ca href=\"\/pages\/dental-bur-speed-chart\"\u003eDental Bur Speed Chart\u003c\/a\u003e, and reprocessing steps in the \u003ca href=\"\/pages\/dental-bur-sterilization-guide\"\u003eBur Sterilization Guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eMade in Germany by Busch \u0026amp; Co.\u003c\/h2\u003e\u003cp\u003eBusch \u0026amp; Co. has manufactured rotary instruments in Engelskirchen, Germany since 1905. Every instrument on this page is a genuine Busch product, precision-ground on a concentric shank under ISO-certified quality management and guaranteed to arrive free of manufacturing defects under our \u003ca href=\"\/pages\/warranty\"\u003eBusch arrival guarantee\u003c\/a\u003e.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Busch number for a US 58 bur?\u003c\/strong\u003e Busch No. 21 012 in carbide (FG\/RA\/HP). The 58L is Busch 21L 012.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is a No. 58 bur?\u003c\/strong\u003e The No. 58 has a 1.2 mm head diameter (ISO size 012) on a straight fissure bur head, ISO shape 107 (cylinder, flat end).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between a No. 58 and a No. 558?\u003c\/strong\u003e Same shape and size; one is plain-cut and the other crosscut. The No. 58 is plain-cut — crosscut cuts faster and clears debris, plain-cut leaves a smoother surface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat do the letters after No. 58 mean?\u003c\/strong\u003e The 58L (Busch 21L 012) carries a longer cutting head for deeper boxes and taller walls.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre Busch No. 58 burs reusable?\u003c\/strong\u003e Yes. Carbide and steel burs are cleaned, disinfected and sterilized between patients and replaced when they dull; the \u003ca href=\"\/pages\/dental-bur-sterilization-guide\"\u003eBur Sterilization Guide\u003c\/a\u003e gives the validated steps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRelated resources:\u003c\/strong\u003e \u003ca href=\"\/pages\/us-bur-numbers\"\u003eUS Bur Number Finder\u003c\/a\u003e · \u003ca href=\"\/pages\/bur-comparison-chart\"\u003eBur Comparison Chart\u003c\/a\u003e · \u003ca href=\"\/pages\/dental-bur-speed-chart\"\u003eSpeed Chart\u003c\/a\u003e · \u003ca href=\"\/pages\/dental-bur-glossary\"\u003eBur Glossary\u003c\/a\u003e · Nearby sizes: \u003ca href=\"\/collections\/us-56-bur\"\u003eUS No. 56\u003c\/a\u003e, \u003ca href=\"\/collections\/us-57-bur\"\u003eUS No. 57\u003c\/a\u003e, \u003ca href=\"\/collections\/us-59-bur\"\u003eUS No. 59\u003c\/a\u003e, \u003ca href=\"\/collections\/us-60-bur\"\u003eUS No. 60\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"carbide-cylinder-flat-dental-bur-21-012-hp-pack-of-6","title":"US No. 58 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 012 – HP | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat dental bur\u003c\/strong\u003e from Busch \u0026amp; Co. GmbH is a precision-engineered rotary cutting instrument designed for demanding applications across dental and technical disciplines. Featuring a flat-ended cylinder geometry, this high-performance carbide cutter delivers clean, controlled material removal with consistent results.\u003c\/p\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis instrument is classified under \u003cstrong\u003eISO: 500 104 107 006 012\u003c\/strong\u003e (US No. 58) and is supplied as a \u003cstrong\u003epack of 6\u003c\/strong\u003e, ensuring you always have a reliable supply on hand. The HP (handpiece) shank is compatible with standard straight handpiece connections, making integration into existing setups straightforward.\u003c\/p\u003e\u003cp\u003eAs a \u003cstrong\u003ecarbide cylinder flat dental bur\u003c\/strong\u003e, this cutter is engineered for precise flat-surface work and right-angle wall preparation. Carbide construction provides exceptional hardness and longevity compared to standard steel alternatives, reducing the frequency of replacements and maintaining cutting efficiency throughout the tool's working life.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat dental bur\u003c\/strong\u003e is well-suited for the following dental laboratory applications:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Crown_Bridge_Tech.png?v=1767131647\" alt=\"Crown and Bridge Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCrown and Bridge Technology\u003c\/strong\u003e — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Plastics_Tech.png?v=1767131648\" alt=\"Plastics Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003ePlastics Technology\u003c\/strong\u003e — Shaping, trimming and finishing of acrylic dentures and appliances.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Making.png?v=1767131647\" alt=\"Model Making\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Making\u003c\/strong\u003e — Trimming and detailing of plaster and stone models.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Cast_Tech.png?v=1767131648\" alt=\"Model Casting Technique\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Casting Technique\u003c\/strong\u003e — Finishing and adjustment of cast metal frameworks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eGerman Engineering Quality\u003c\/h2\u003e\u003cp\u003eManufactured by Busch \u0026amp; Co. GmbH, this \u003cstrong\u003ecarbide cylinder flat dental bur\u003c\/strong\u003e upholds the exacting standards associated with German-made dental instruments. Each bur is produced with strict quality control to deliver repeatable performance across clinical and technical workflows.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this bur?\u003c\/strong\u003e This bur is classified under ISO: 500 104 107 006 012.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included in one pack?\u003c\/strong\u003e Each pack contains 6 individual burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e This bur features an HP (handpiece) straight shank for use with standard straight handpieces.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21-012-hp\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.104.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.11.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21-012-HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eEdenta\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eC21.104.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367837372702,"sku":"020453","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-zt-base_348194e2-004b-49b0-b5bf-de38556af075.png?v=1766500233"},{"product_id":"carbide-cylinder-flat-cutter-dental-bur-21l-012-hp-long-pack-of-6","title":"US No. 58L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 21L 012 – HP | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e from Busch \u0026amp; Co. GmbH is a precision-engineered rotary instrument designed for demanding applications in dental and technical laboratories. Manufactured in Germany, this cutter delivers the consistent performance and dimensional accuracy that professionals expect from a premium-grade tool.\u003c\/p\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis instrument is classified as a Carbide Cutter, Cylinder Flat, conforming to the standard ISO classification \u003cstrong\u003e500 104 110 006 012\u003c\/strong\u003e (US No. 58L). It is supplied in a convenient \u003cstrong\u003epack of 6\u003c\/strong\u003e, ensuring availability for continuous workflow without frequent reordering. The long shank HP (handpiece) configuration provides extended reach and enhanced control in precision cutting tasks.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e is well-suited for the following dental laboratory applications:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Crown_Bridge_Tech.png?v=1767131647\" alt=\"Crown and Bridge Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCrown and Bridge Technology\u003c\/strong\u003e — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Plastics_Tech.png?v=1767131648\" alt=\"Plastics Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003ePlastics Technology\u003c\/strong\u003e — Shaping, trimming and finishing of acrylic dentures and appliances.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Making.png?v=1767131647\" alt=\"Model Making\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Making\u003c\/strong\u003e — Trimming and detailing of plaster and stone models.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Cast_Tech.png?v=1767131648\" alt=\"Model Casting Technique\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Casting Technique\u003c\/strong\u003e — Finishing and adjustment of cast metal frameworks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhy Choose This Carbide Cutter?\u003c\/h2\u003e\u003cp\u003eAs a \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e, this instrument features a flat-ended cylindrical geometry that enables smooth, controlled material removal in both dental and technical lab settings. The carbide construction ensures long-lasting sharpness and resistance to wear under repeated use. Each unit is made in Germany to rigorous quality standards.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this bur?\u003c\/strong\u003e This carbide cylinder flat cutter dental bur is classified under ISO 500 104 110 006 012.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included per pack?\u003c\/strong\u003e Each pack contains 6 individual burs, making it cost-effective for laboratory and clinical use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e It features an HP (handpiece) shank in a long configuration, referenced as US No. 58L.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21l-012-hp\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.104.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.11.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21L-012-HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eEdenta\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eC21L.104.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367839207710,"sku":"020577","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21l-zt-base_322e9364-a1bd-4bb7-a685-fec5d62313fa.png?v=1766500324"},{"product_id":"carbide-cylinder-fissure-bur-21-012-ra-fiss-cyl-6pk","title":"US No. 58 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 012 – RA | Pack of 6","description":"\u003cp\u003e\u003cstrong\u003eBusch No. 21 012 – RA\u003c\/strong\u003e (US No. 58) is a 1.2 mm (ISO 012) flat-end carbide cylinder fissure bur on a \u003cstrong\u003elatch-type right-angle (RA) shank\u003c\/strong\u003e, sold in packs of 6. It runs in slow-speed contra-angle handpieces and is the low-speed alternative to the 21 012 FG; both are made in Germany by Busch \u0026amp; Co. GmbH.\u003c\/p\u003e\u003ch2\u003eWhy choose the RA version\u003c\/h2\u003e\u003cp\u003eAt low speed in a latch contra-angle the 1.2 mm cylinder is typically used to finish and refine preparations — establishing flat pulpal floors, squaring walls, and excavating dentine where the reduced speed gives better tactile control and less heat than a turbine. The RA shank fits standard slow-speed handpieces; move to the FG version of the No. 58 for high-speed enamel cutting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlso available:\u003c\/strong\u003e \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-fg-pack-of-6\"\u003eNo. 21 010 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-ra-pack-of-6\"\u003eNo. 21 010 – RA\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-012-fg-pack-of-6\"\u003eNo. 21 012 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-016-fg-pack-of-6\"\u003eNo. 21 016 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21-016-hp-pack-of-6\"\u003eNo. 21 016 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-bur-21r-014-hp-pack-of-6\"\u003eNo. 21R 014 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-fissure-bur-21r-014-fg-pack-of-6\"\u003eNo. 21R 014 – FG\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eProduct Classification\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is classified under the following ISO standard:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO:\u003c\/strong\u003e 500 204 107 006 012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS No.:\u003c\/strong\u003e 58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Cylinder Flat (RA shank)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Size:\u003c\/strong\u003e 6 burs per pack\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCarbide construction for superior hardness and wear resistance\u003c\/li\u003e\n\u003cli\u003eCylinder flat geometry provides controlled, flat-floored cavity preparation\u003c\/li\u003e\n\u003cli\u003eRA (Right Angle \/ Latch-type) shank for compatibility with standard slow-speed handpieces\u003c\/li\u003e\n\u003cli\u003eEngineered and manufactured in Germany to exacting quality standards\u003c\/li\u003e\n\u003cli\u003eConsistent cutting efficiency across repeated clinical use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is well-suited for the following clinical procedures:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Cavity_Fissure_Prep.png?v=1767131647\" alt=\"Cavity\/Fissure Preparation\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCavity\/Fissure Preparation\u003c\/strong\u003e — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eIts cylinder flat design makes it an ideal choice for accessing and excavating fissures, establishing flat pulpal floors, and preparing Class I and Class II cavities with precision and efficiency. The RA latch-type shank ensures secure engagement with standard slow-speed contra-angle handpieces, making integration into existing clinical workflows straightforward.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e This bur features an RA (latch-type) shank, compatible with standard slow-speed contra-angle handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included per pack?\u003c\/strong\u003e Each pack contains 6 burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this carbide cylinder fissure dental bur?\u003c\/strong\u003e The ISO classification is 500 204 107 006 012.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this bur manufactured?\u003c\/strong\u003e This bur is engineered and manufactured in Germany to exacting quality standards.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21-012-ra\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.204.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.21.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21-012-RA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eEdenta\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eC21.204.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367854969118,"sku":"020509","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-base_0d6a1687-5b66-4653-b410-f757e0a06f42.png?v=1766500238"},{"product_id":"carbide-cylinder-fissure-dental-bur-21-012-fg-pack-of-6","title":"US No. 58 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 012 – FG | Pack of 6","description":"\u003cp\u003ePack of 6. \u003cstrong\u003eBusch No. 21 012 – FG\u003c\/strong\u003e (US No. 58) is the 1.2 mm (ISO 012) friction-grip member of the 21 carbide straight fissure (cylinder) family — a step up in diameter from the No. 57 and below the No. 60. Its \u003cstrong\u003eFG shank\u003c\/strong\u003e is intended for high-speed turbine handpieces; Busch \u0026amp; Co. GmbH manufactures it in Germany, and a latch RA version of the same head is listed separately.\u003c\/p\u003e\u003ch2\u003eWhy choose the FG version\u003c\/h2\u003e\u003cp\u003eThe 1.2 mm flat-end cylinder is typically the everyday high-speed fissure bur for Class I and Class II preparations — wide enough for efficient outline form and flat pulpal floors, yet still conservative. In a turbine or electric high-speed handpiece it cuts enamel cleanly under water spray; choose the RA-shank 21 012 for low-speed contra-angle work, or the 21 010 \/ 21 016 FG for narrower or wider preparations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlso available:\u003c\/strong\u003e \u003ca href=\"\/products\/carbide-cylinder-fissure-bur-21-012-ra-fiss-cyl-6pk\"\u003eNo. 21 012 – RA\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-fg-pack-of-6\"\u003eNo. 21 010 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-ra-pack-of-6\"\u003eNo. 21 010 – RA\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-016-fg-pack-of-6\"\u003eNo. 21 016 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21-016-hp-pack-of-6\"\u003eNo. 21 016 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-bur-21r-014-hp-pack-of-6\"\u003eNo. 21R 014 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-fissure-bur-21r-014-fg-pack-of-6\"\u003eNo. 21R 014 – FG\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Carbide, Cylinder Flat, Excavating and Fissure Bur\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS Number:\u003c\/strong\u003e 58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Reference:\u003c\/strong\u003e 21 012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Classification:\u003c\/strong\u003e 500 314 107 006 012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e FG (Friction Grip)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 6 burs per pack\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is particularly suited for cavity and fissure preparation, where precise, controlled cutting geometry is essential. The flat-end cylinder form allows the clinician to establish clean, defined cavity walls and floors with minimal risk of over-extension.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is well-suited for the following clinical procedures:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Cavity_Fissure_Prep.png?v=1767131647\" alt=\"Cavity\/Fissure Preparation\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCavity\/Fissure Preparation\u003c\/strong\u003e — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eGerman Engineering Quality\u003c\/h2\u003e\u003cp\u003eEvery \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e in this range is produced in Germany, reflecting Busch \u0026amp; Co. GmbH's longstanding commitment to precision manufacturing. The result is an instrument that maintains its cutting edge through extended clinical use, reducing the need for frequent replacement and supporting consistent procedural outcomes.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e This bur features an FG (Friction Grip) shank, compatible with standard high-speed handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included per pack?\u003c\/strong\u003e Each pack contains 6 individual carbide cylinder fissure dental burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this bur?\u003c\/strong\u003e The ISO classification is 500 314 107 006 012.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21-012-fg\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.314.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.31.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21-012-FG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eSS White\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003e310118\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eNTI (Kerr Rotary)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eFG58-KC0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eAlpen (Coltène)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eR100058\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367862636830,"sku":"020557","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-base_9e88a3a9-e03c-43cd-a5b2-d9ffd2f92094.png?v=1766500224"},{"product_id":"carbide-cylinder-fissure-dental-bur-21l-012-fg-long-pack-of-6","title":"US No. 58L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 21L 012 – FG | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e from Busch \u0026amp; Co. GmbH is a precision-engineered rotary cutting instrument designed for demanding restorative and operative dentistry procedures. Manufactured in Germany to exacting standards, this bur delivers consistent, controlled cutting performance in the most challenging clinical environments.\u003c\/p\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis instrument is classified as a Carbide, Cylinder Flat, Excavating and Fissure Bur, engineered specifically for long-reach applications requiring accuracy and stability. It is supplied in a convenient pack of 6, ensuring continuity across multiple procedures.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Carbide, Cylinder Flat, Excavating and Fissure Bur\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS No.:\u003c\/strong\u003e 58L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Classification:\u003c\/strong\u003e 500 314 110 006 012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e FG (Friction Grip)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Cylinder Long\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Size:\u003c\/strong\u003e 6 units\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is well-suited for the following clinical procedures:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Cavity_Fissure_Prep.png?v=1767131647\" alt=\"Cavity\/Fissure Preparation\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCavity\/Fissure Preparation\u003c\/strong\u003e — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhy Choose This Bur?\u003c\/h2\u003e\u003cp\u003eAs a \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e, this instrument benefits from the renowned precision of German manufacturing. The tungsten carbide construction ensures long-lasting sharpness and resistance to wear, making it a reliable choice for high-volume clinical settings. The long cylinder geometry provides excellent depth control, particularly valuable during fissure and cavity preparation workflows.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e This bur features an FG (Friction Grip) shank, compatible with standard high-speed handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included?\u003c\/strong\u003e Each pack contains 6 individual burs, offering excellent value for busy dental practices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification?\u003c\/strong\u003e The ISO classification is 500 314 110 006 012, allowing precise identification and reordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine German-made product?\u003c\/strong\u003e Yes. This \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is manufactured by Busch \u0026amp; Co. GmbH in Germany.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21l-012-fg\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.314.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.31.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21L-012-FG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eAlpen (Coltène)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eR10058L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367862997278,"sku":"020589","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-base_c2947341-1b4f-4a53-a33c-2d4e836981ef.png?v=1766500318"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/collections\/21-base_9e88a3a9-e03c-43cd-a5b2-d9ffd2f92094.png?v=1789481587","url":"https:\/\/deutschedt.com\/collections\/us-58-bur.oembed","provider":"Deutsche Dental Technologien","version":"1.0","type":"link"}