US No. 4 Busch Carbide Round Bur | Busch No. 1 014 – RA | Pack of 6
The round carbide dental bur pack from Busch & Co. GmbH is a precision rotary instrument engineered for reliable cavity and fissure preparation in clinical dental practice. Each unit in this pack features a round, rosehead carbide design, combining consistent cutting geometry with the durability expected from German-manufactured dental instruments.
Product Specifications
- Shape: Round (Rosehead)
- Material: Carbide
- Size: US No. 4 (1 014)
- Standard Classification: ISO: 500 204 001 001 014
- Shank Type: RA (Right Angle / Contra-Angle)
- Pack Quantity: 6 burs per pack
Applications
This round carbide dental bur pack is specifically suited for cavity and fissure preparation procedures. The round rosehead geometry allows controlled penetration and smooth internal cavity shaping, making it a dependable choice for restorative workflows that demand precision and repeatability.
The round carbide dental bur pack is well-suited for the following clinical procedures:
| Cavity/Fissure Preparation — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin. |
Instrument Dimensions
| Head Ø | 1.4 mm (ISO size 014) |
|---|---|
| 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.
Why Choose This Bur?
As a genuine Busch product, this round carbide dental bur pack upholds the quality standards associated with German dental manufacturing. The carbide construction ensures longevity and consistent cutting performance across multiple uses, while the RA shank provides compatibility with standard contra-angle handpieces.
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 handpiece is this bur compatible with? This bur features an RA (right angle/contra-angle) shank, making it compatible with standard contra-angle handpieces.
How many burs are included? Each order contains a pack of 6 round carbide burs.
What is the ISO classification for this bur? The ISO classification is 500 204 001 001 014.
Is this a genuine Busch product? Yes, this round carbide dental bur pack is manufactured by Busch & Co. GmbH in Germany.
Compare With
| Manufacturer | Reference |
|---|---|
| Komet (Gebr. Brasseler) | H1.204.014 |
| Brasseler USA | H1.21.014 |
| Meisinger | HM1-014-RA |
| SS White | 310004 |
| NTI (Kerr Rotary) | LA4-KC0 |
| Alpen (Coltène) | R200004 |
| Edenta | C1.204.014 |
Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.
This is a US No. 4. See all 13 Busch versions — materials, shanks, cuts and packs — on our US No. 4 page.

