US No. 557L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 31L 010 – Crosscut – HP | Pack of 6
The carbide cylinder flat cutter bur from Busch & Co. GmbH is a precision rotary cutting tool engineered for demanding material removal and shaping tasks across a range of professional applications. Built to exacting German manufacturing standards, this high-performance instrument delivers consistent, controlled results in every use.
Product Details
This carbide cylinder flat cutter bur features a cylinder flat geometry designed to produce clean, flat-bottomed cuts with smooth sidewalls. The carbide construction ensures long-lasting cutting performance and resistance to wear, making it a reliable choice for high-volume work environments.
- Type: Carbide Cutter, Cylinder Flat
- Standard Classification: ISO: 500 104 110 007 010
- US No.: 557L
- Pack Quantity: 6 pieces
Applications
The carbide cylinder flat cutter 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. |
Instrument Dimensions
| Head Ø | 1.0 mm (ISO size 010) |
|---|---|
| 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.
German Engineering
Manufactured in Germany, this carbide cylinder flat cutter bur meets the rigorous quality expectations associated with Busch & Co. GmbH, a trusted name in precision rotary instruments for dental and technical applications.

FAQ
What ISO classification does this bur correspond to? This instrument is classified under ISO: 500 104 110 007 010.
How many burs are included in a pack? Each pack contains 6 pieces of the 31L 010 carbide cylinder flat cutter bur.
What shank type does this bur use? This bur is designed for HP (handpiece) use, suitable for straight handpiece applications.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31L.104.010 |
| Brasseler USA | H31L.11.010 |
| Meisinger | HM31L-010-HP |
| Edenta | C31L.104.010 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.

