US No. 34 1/2 Busch Carbide Inverted Cone Bur | Busch No. 2 009 – HP | Pack of 6
The inverted cone carbide bur from Busch & Co. GmbH is a precision-engineered rotary cutting instrument designed for demanding applications across multiple technical disciplines. Classified under ISO 500 104 010 001 009, this taper (cone) inverted carbide cutter delivers consistent, controlled material removal in professional settings.
Product Overview
This inverted cone carbide bur (US No. 34 1/2) is supplied as a convenient pack of 6, making it well-suited for both high-volume workflows and bench-side use. Carbide construction ensures excellent cutting performance and longevity compared to standard steel alternatives, maintaining edge integrity through repeated use.
Applications
The inverted cone carbide 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 | 0.9 mm (ISO size 009) |
|---|---|
| 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 Inverted Cone Carbide Bur
As a product of Busch & Co. GmbH, this inverted cone carbide bur is manufactured in Germany to exacting quality standards. German-engineered instruments from Busch are recognized for dimensional accuracy, balanced rotation, and reliable cutting characteristics — qualities that dentists and dental technicians depend on.
Each pack contains 6 burs, providing a cost-effective supply for ongoing use. The inverted cone geometry makes this bur particularly effective for undercutting, flat-bottomed cavity work, and precise groove formation.
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? This product is classified under ISO 500 104 010 001 009.
How many burs are included? Each pack contains 6 individual burs.
What US number corresponds to this bur? This bur corresponds to US No. 34 1/2.
Where is this inverted cone carbide bur manufactured? It is made in Germany by Busch & Co. GmbH.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H2.104.009 |
| Meisinger | HM2-009-HP |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
Specifications: Busch No. 2 009
| Busch figure | 2 |
| US No. | 34 1/2 |
| Shape | Inverted Cone |
| ISO size / head diameter | 009 (0.9 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 0.9 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. 34 1/2. See all 3 Busch versions — materials, shanks, cuts and packs — on our US No. 34 1/2 page.
US No. 34 1/2 Busch Carbide Inverted Cone Bur | Busch No. 2 009 – H...
