US No. 7S Busch Carbide Round Bur | Busch No. 1S 021 – FG | Pack of 6
The round carbide dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for efficient and controlled cavity and fissure preparation. Manufactured in Germany to exacting standards, this bur delivers consistent clinical performance across a wide range of restorative procedures.
Product Specifications
- Type: Carbide, Round, Rosehead
- Cutting Characteristic: Fast Cutting
- Identification: Green Ring
- Item Reference: 1S 021 (US No. 7S)
- ISO Classification: 500 314 001 003 021
- Pack Quantity: Pack of 6
- Shank Type: FG (Friction Grip)
Applications
This round carbide dental bur is specifically indicated for cavity and fissure preparation, making it a reliable choice for clinicians performing class I, II, and V restorations. The rosehead geometry and fast-cutting carbide design allow for smooth, efficient tissue removal with minimal heat generation.
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. |
Instrument Dimensions
| Head Ø | 2.1 mm (ISO size 021) |
|---|---|
| Shank | FG (Friction Grip) — 1.60 mm Ø, 19 mm overall length (ISO 314) |
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 premium round carbide dental bur, this instrument benefits from Busch & Co. GmbH's long-standing German manufacturing heritage. Each bur in the pack is produced under rigorous quality control, ensuring dimensional accuracy, cutting edge consistency, and reliable fit in standard FG handpieces. The green ring color-coding aids quick identification chairside, reducing setup time and workflow interruptions.
Supplied in a convenient pack of 6, this round carbide dental bur offers excellent value for busy dental practices seeking dependable performance on every use.

FAQ
What handpiece is this bur compatible with? This bur features an FG (Friction Grip) shank, compatible with standard high-speed FG handpieces used in dental practices.
How many burs are included in the pack? Each pack contains 6 individual burs.
What is the ISO classification for this bur? The ISO classification is 500 314 001 003 021.

