US No. 60 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 016 – HP | Pack of 6
Busch No. 21 016 – HP (US No. 60) carries the 1.6 mm (ISO 016) flat-end carbide cylinder head of the 21 series on an HP shank for straight handpieces, positioning it as the laboratory and technical version of the family. Supplied in packs of 6 and manufactured in Germany by Busch & Co. GmbH, it is the bench-side sibling of the chairside 21 016 FG.
Why choose the HP version
Straight handpieces, typically running up to roughly 40,000 rpm, are the workhorses of the dental laboratory, and a 1.6 mm cylinder flat cutter on an HP shank is well suited to trimming acrylic, refining crown and bridge frameworks, detailing models and adjusting cast frameworks. If you need the same No. 60 geometry in a high-speed turbine for chairside cavity work, choose the FG version.
Also available: No. 21 012 – RA, No. 21 010 – FG, No. 21 010 – RA, No. 21 012 – FG, No. 21 016 – FG, No. 21R 014 – HP, No. 21R 014 – FG.
Product Specifications
- Type: Carbide Cutter, Cylinder Flat
- Product Number: 21 016 (US No. 60)
- ISO Classification: 500 104 107 006 016
- Pack Quantity: 6 pieces
- Shank Type: HP (Handpiece)
- Manufacturer: Busch & Co. GmbH, Made in Germany
Instrument Dimensions
| Head Ø | 1.6 mm (ISO size 016) |
|---|---|
| Shank | HP (Straight Handpiece) — 2.35 mm Ø, 44.5 mm overall length (ISO 104) |
Per ISO 6360, the size number is the maximum head diameter in tenths of a millimeter. See our Busch Bur Size Chart for the full size conversion table, shank codes, and color ring guide.
Applications
The carbide cylinder flat cutter dental bur is well-suited for the following dental laboratory applications:
| Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. | |
| Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. | |
| Model Making — Trimming and detailing of plaster and stone models. | |
| Model Casting Technique — Finishing and adjustment of cast metal frameworks. |
German Engineering Quality
As a carbide cylinder flat cutter dental bur manufactured in Germany, this instrument upholds the high standards of precision and durability that Busch & Co. GmbH is known for. The carbide construction ensures long-lasting cutting performance and resistance to wear under repeated use.
Busch Warranty & 90-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused product in original packaging can also be returned or exchanged within 90 days of your invoice date. Full terms are on our Warranty page.

FAQ
What is the ISO classification for this bur? The ISO classification is 500 104 107 006 016.
How many burs are included in this pack? This product is supplied as a pack of 6 individual burs.
What shank type does the 21 016 use? It uses an HP (handpiece) shank, suitable for straight handpiece use. This carbide cylinder flat cutter dental bur is compatible with standard HP-type rotary handpieces.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H21.104.016 |
| Brasseler USA | H21.11.016 |
| Meisinger | HM21-016-HP |
| Edenta | C21.104.016 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 21 016
| Busch figure | 21 |
| US No. | 60 |
| Shape | Straight Fissure (Cylinder) |
| ISO size / head diameter | 016 (1.6 mm max head Ø) |
| Shank | HP |
| Lab applications (per Busch) | Crown and Bridge Technology, Model Casting Technique, Model Making, Plastics Technology |
| Pack size | Pack of 6 |
| Material | Carbide |
The straight fissure (cylinder) head has parallel sides and a flat end, so it cuts straight-walled slots, flat steps and parallel surfaces. A 1.6 mm head gives enough edge for shaping while still following tooth-sized contours.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
This is a US No. 60. See all 2 Busch versions — materials, shanks, cuts and packs — on our US No. 60 page.

