Busch Carbide Bone Taper (Cone) Pointed Cutter | Busch No. 166 021 – RA | Pack of 2
Busch No. 166 021 – RA is the larger-head sibling of the 162 series: a carbide taper (cone) pointed bone cutter with a 2.1 mm (ISO 021) head on a standard latch-type right-angle (RA) shank. It is intended for slow-speed contra-angle handpieces and is supplied as a pack of 2 by Busch & Co. GmbH, Germany.
Why choose the RA version
A 2.1 mm head removes bone faster than the 1.6 mm No. 162, so the RA shank version is typically chosen for broader contouring tasks in a low-speed latch contra-angle — for example levelling a ridge or reducing a bony prominence under irrigation. Its standard shank length keeps the instrument compact; if you need extra reach to posterior sites, see the 166 021 RA-L, and for a straight surgical handpiece choose the 166A 021 HP.
Also available: No. 166A 021 – HP, No. 166A 021 – RA-L, No. 166A 021 – RA, No. 166 021 – RA-L.
Product Overview
This carbide bone cutter dental bur features a taper (cone)-pointed geometry optimized for targeted access and efficient cutting at surgical sites. The carbide construction maintains sharpness across clinical use, ensuring reliable and consistent performance procedure after procedure.
- Material: Carbide
- Shape: Taper (Cone) Pointed
- Type: Bone Cutter
- Standard Classification: ISO 500 204 409 297 021
- Pack Size: Pack of 2
Instrument Dimensions
| Head Ø | 2.1 mm (ISO size 021) |
|---|---|
| Shank | RA / CA (Contra-Angle, latch) — 2.35 mm Ø, 22 mm overall length (ISO 204) |
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.
Applications
The carbide bone cutter dental bur is indicated for oral surgery applications where precise and controlled bone removal is essential. The taper (cone)-pointed profile enables targeted access and minimizes trauma to surrounding tissue, supporting optimal surgical outcomes.

FAQ
What handpieces are compatible with this instrument? It has an RA (right angle, latch-type) shank, which fits standard slow-speed contra-angle handpieces.
How many are included per pack? Each pack contains 2 cutters.
Where is this instrument made? It is manufactured by Busch & Co. in Engelskirchen, Germany, an ISO 13485-certified specialist in rotary precision instruments since 1905.
