US No. 33 1/2 Busch Carbide Inverted Cone Bur | Busch No. 2 006 – HP | Pack of 6
The inverted cone carbide cutter bur from Busch & Co. GmbH is a precision rotary instrument engineered for demanding cutting and shaping tasks across a range of technical disciplines. Classified under ISO standard 500 104 010 001 006, this carbide cutter features an inverted cone geometry that enables controlled material removal with exceptional accuracy.
Product Overview
This inverted cone carbide cutter bur is supplied in a convenient pack of 6 (US No. 33 1/2), ensuring consistent availability for high-volume workflows. The carbide construction delivers durability and long-lasting cutting performance, making it a reliable choice for professionals who demand repeatable results.
Applications
The inverted cone carbide 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. |
Key Features
- Inverted cone carbide geometry for targeted, precise cutting
- ISO Classification: 500 104 010 001 006
- Packed in quantities of 6 for professional use
- Manufactured in Germany to rigorous quality standards
As a genuine inverted cone carbide cutter bur made in Germany, this instrument reflects Busch & Co. GmbH's longstanding commitment to precision engineering and quality craftsmanship. Whether used in dental laboratories, plastics processing, or model-making environments, it delivers consistent and reliable cutting performance.
Instrument Dimensions
| Head Ø | 0.6 mm (ISO size 006) |
|---|---|
| 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.
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 carbide cutter? This inverted cone carbide cutter bur is classified under ISO standard 500 104 010 001 006.
How many burs are included in one pack? Each pack contains 6 individual burs (US No. 33 1/2).
What industries is this bur suitable for? It is suitable for model making, plastics technology, crown and bridge technology, and model casting technique.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H2.104.006 |
| Brasseler USA | H2.11.006 |
| Meisinger | HM2-006-HP |
| SS White | 310057 |
| Alpen (Coltène) | R6331/2 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 2 006
| Busch figure | 2 |
| US No. | 33 1/2 |
| Shape | Inverted Cone |
| ISO size / head diameter | 006 (0.6 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 inverted cone has a wider end than base, so it undercuts: it is used in the lab to cut retention undercuts and flat-floored recesses. The 0.6 mm head is a small size for confined spaces and detail work.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
This is a US No. 33 1/2. See all 3 Busch versions — materials, shanks, cuts and packs — on our US No. 33 1/2 page.

