US No. 59L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 21L 014 – HP | Pack of 6
The carbide cylinder flat cutter dental bur from Busch is a precision-engineered rotary instrument designed for controlled material removal across a range of professional applications. Manufactured in Germany to exacting standards, this long-shank HP (handpiece) cylinder flat carbide cutter delivers consistent performance where accuracy is critical.
Product Specifications
- Type: Carbide Cutter, Cylinder Flat
- US No.: 59L
- ISO Classification: 500 104 110 006 014
- Shank: HP (Handpiece)
- Pack Quantity: 6
Applications
The carbide cylinder flat cutter dental bur is well-suited for the following dental laboratory applications:
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Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. |
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Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. |
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Model Making — Trimming and detailing of plaster and stone models. |
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Model Casting Technique — Finishing and adjustment of cast metal frameworks. |
Instrument Dimensions
| Head Ø | 1.4 mm (ISO size 014) |
|---|---|
| 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.
Why Choose This Carbide Bur?
As a carbide cylinder flat cutter dental bur, this instrument is valued for its dimensional stability and cutting longevity. The flat-end cylinder profile allows for precise flat-surface work and right-angle finishing that rounded profiles cannot achieve. Supplied in a convenient pack of 6, it ensures consistent availability in a busy laboratory or clinical environment.
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 500 104 110 006 014.
How many burs are included in a pack? Each pack contains 6 individual carbide cylinder flat cutter dental bur instruments.
What shank type does this bur use? This bur is designed for use with an HP (handpiece) shank, suitable for standard laboratory handpieces.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H21L.104.014 |
| Brasseler USA | H21L.11.014 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 21L 014
| Busch figure | 21L |
| US No. | 59L |
| Shape | Straight Fissure (Cylinder) Long |
| ISO size / head diameter | 014 (1.4 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 long straight fissure head keeps the parallel-sided cylinder profile but reaches deeper, for slots and walls that a standard-length head cannot follow. The 1.4 mm head is a mid-size that handles general contouring of dentures, frameworks and models.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
This is a US No. 59. See all 4 Busch versions — materials, shanks, cuts and packs — on our US No. 59 page.
US No. 59L Busch Carbide Straight Fissure (Cylinder) Long Bur | Bus...
