US No. 555 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 31 008 – Crosscut – HP | Pack of 6
The carbide cylinder flat cutter dental bur from Busch & Co. GmbH is a precision-engineered rotary cutting instrument designed for demanding applications across dental and technical disciplines. Manufactured in Germany, this cylinder flat carbide cutter delivers consistent, controlled material removal with the reliability that Busch instruments are known for worldwide.
Product Details
This instrument is classified as a Carbide Cutter, Cylinder Flat and carries the standard ISO classification: 500 104 107 007 008. It is sold as a convenient Pack of 6 (US No. 555 / Item 31 008), making it ideal for busy practices and technical workshops that require a reliable supply of high-quality burs on hand.
Applications
As a carbide cylinder flat cutter dental bur, this instrument is particularly valued for its ability to produce flat-base cavities and smooth vertical walls, making it a staple in both dental and technical laboratory settings.
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. |
Instrument Dimensions
| Head Ø | 0.8 mm (ISO size 008) |
|---|---|
| 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 Busch Carbide Burs?
Busch & Co. GmbH has a long-standing reputation for manufacturing precision rotary instruments in Germany. Each carbide cylinder flat cutter dental bur in this pack is crafted to exacting tolerances, ensuring consistent cutting performance, extended tool life, and predictable clinical and laboratory results.

FAQ
What is the ISO classification for this bur? This carbide cylinder flat cutter carries the ISO classification 500 104 107 007 008.
How many burs are included per pack? Each pack contains 6 burs (Pack of 6).
Is this bur suitable for dental laboratory use? Yes, this carbide cylinder flat cutter dental bur is designed for use in dental, crown and bridge, model making, plastics technology, and model casting applications.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H31.104.008 |
| Brasseler USA | H31.11.008 |
| Meisinger | HM31-008-HP |
| Edenta | C31.104.008 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.

