Busch Carbide Bone Taper (Cone) Pointed Cutter | Busch No. 166A 021 – RA | Pack of 2
The Busch No. 166A 021 – RA is a 2.1 mm (ISO 021) A-Cut, low-vibration carbide taper (cone) pointed bone cutter on a standard latch-type right-angle (RA) shank, sold as a pack of 2. Made in Germany by Busch & Co. GmbH, it fits slow-speed contra-angle handpieces and is the standard-length counterpart to the 166A 021 RA-L.
Why choose the RA version
Choose the RA shank when the surgical site is readily accessible and you want the 2.1 mm A-Cut head as close to the contra-angle as possible for stability — typical for alveoloplasty or bone smoothing after extractions in a low-speed latch handpiece. The compact working length gives good tactile control; the RA-L extends reach for posterior sites and the HP transfers the same head to a straight handpiece.
Also available: No. 166 021 – RA, No. 166A 021 – HP, No. 166A 021 – RA-L, No. 166 021 – RA-L.
Product Overview
- Type: Carbide Bone Cutter
- Shape: Taper (Cone) Pointed
- Cut Style: A-Cut
- Performance: Low Vibration
- Standard Classification: ISO: 500 204 409 298 021
- Pack Size: Pack of 2
Key Features
As a professional-grade carbide bone cutter dental bur, the 166A 021 RA is manufactured to exacting standards in Germany. The carbide construction ensures exceptional hardness and wear resistance, supporting consistent cutting performance across multiple uses. The A-Cut flute design reduces chatter and minimizes heat generation during bone preparation procedures.
Applications
The carbide bone cutter dental bur is well-suited for the following clinical procedures:
 |
Oral Surgery — Cutting and shaping of bone in oral and maxillofacial surgical procedures. |
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.
Busch Warranty & 60-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused, unopened product in its original packaging can also be returned or exchanged within 60 days of delivery. Full terms are on our Warranty page and Returns page.
FAQ
What ISO classification does this bur conform to?
This instrument conforms to ISO: 500 204 409 298 021.
How many burs are included in each pack?
Each pack contains 2 burs.
What makes the A-Cut design advantageous?
The A-Cut geometry is engineered to reduce vibration and improve cutting efficiency, making it well-suited for delicate oral surgery environments.
