Busch Carbide Bone Taper (Cone) Pointed Cutter | Busch No. 166 021 – RA-L | Pack of 2
Pack of 2. The Busch No. 166 021 – RA-L is a carbide taper (cone) pointed bone cutter with a 2.1 mm (ISO 021) head fitted to a long latch-type (RA-L) shank, giving extra working length from a slow-speed contra-angle handpiece. It shares its head geometry with the 166 021 RA but reaches further; Busch & Co. GmbH manufactures it in Germany.
Why choose the RA-L version
The long RA shank is typically preferred when the operative site is deep or far posterior — for example distal to a second molar or in a deep osteotomy — because it moves the contra-angle head away from the tissue and improves visibility. Combined with the 2.1 mm head, this makes it suited to efficient bone removal where standard-length burs would be awkward to position.
Also available: No. 166 021 – RA, No. 166A 021 – HP, No. 166A 021 – RA-L, No. 166A 021 – RA.
Product Details
- Type: Carbide, Taper (Cone) Pointed Bone Cutter
- Reference: 166 021 RA-L
- Standard Classification (ISO): 500 205 409 297 021
- 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.
Design & Construction
The carbide taper (cone) pointed bone cutter bur features a taper (cone)-pointed geometry optimised for precise entry and efficient material removal in osseous tissue. Carbide construction provides exceptional hardness and wear resistance, ensuring that the cutting edges maintain their integrity across demanding clinical use. Each bur in this pack of 2 meets consistent dimensional tolerances for reliable, repeatable performance.
Applications
The carbide taper (cone) pointed bone cutter bur is well-suited for the following clinical procedures:
| Oral Surgery — Cutting and shaping of bone in oral and maxillofacial surgical procedures. |
Made in Germany
Busch & Co. GmbH instruments are manufactured in Germany, reflecting a tradition of precision craftsmanship and rigorous quality standards that dental and surgical professionals trust worldwide.

FAQ
What tissue is this bur intended for? This carbide taper (cone) pointed bone cutter bur is designed specifically for cutting and shaping osseous (bone) tissue in oral surgery settings.
How many burs are included? Each order contains a pack of 2 burs (166 021 RA-L).
What is the ISO classification? The standard ISO classification for this instrument is 500 205 409 297 021.
