US No. 7S Busch Carbide Round Bur | Busch No. 1S 021 – RA | Pack of 6
The round carbide dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for efficient and controlled intraoral cutting. Featuring a rosehead geometry with a fast-cutting carbide design and a green ring identification band, this bur delivers consistent performance across a range of restorative procedures.
Product Specifications
- Type: Carbide, Round, Rosehead
- Cutting Characteristics: Fast Cutting
- Identification: Green Ring
- Standard Classification: ISO 500 204 001 003 021
- US Equivalent: No. 7S
- Shank Type: RA (Right Angle / Latch-Type)
- Pack Size: 6 burs per pack
Applications
The round carbide dental bur 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. |
The fast-cutting rosehead design allows clinicians to efficiently enter enamel and dentin, making it an ideal choice for opening carious lesions and preparing cavity outlines with precision.
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.
Why Choose This Round Carbide Dental Bur?
Manufactured in Germany to rigorous quality standards, this round carbide dental bur exemplifies the engineering excellence associated with Busch & Co. GmbH. The carbide construction ensures long-lasting sharpness and reliable cutting efficiency, while the standardized ISO classification guarantees compatibility and traceability in clinical settings.
FAQ
What shank type does this bur use? This bur features an RA (Right Angle/Latch-Type) shank, compatible with standard slow-speed contra-angle handpieces.
How many burs are included per pack? Each pack contains 6 individual round carbide dental burs.
What is the ISO classification for this bur? The ISO classification is 500 204 001 003 021, corresponding to US No. 7S.
US No. 7S Busch Carbide Round Bur | Busch No. 1S 021 – RA | Pack of 6
