US No. 7SXM Busch Carbide Round Bur | Busch No. 1SXM 021 – SXM-Cut – RA | Pack of 6
The round SXM-cut carbide dental bur from Busch & Co. is a precision-engineered rotary instrument designed to deliver fast cutting action with significantly reduced vibration during clinical procedures. Built with a rosehead form and slender neck geometry, this bur offers outstanding access to cavity preparations and fissure work with excellent tactile control.
This is a US No. 7. See all 10 Busch versions — materials, shanks, cuts and packs — on our US No. 7 page.
Key Features
- Carbide Construction: Engineered for durability and consistent cutting performance across multiple uses.
- Round Rosehead Form: Ideal geometry for cavity and fissure preparation procedures.
- SXM-Cut Design: Fast cutting with low vibration transmission to the handpiece and tooth structure.
- Slender Neck: Improves visibility and access in posterior and confined areas.
- Gold Plated Neck: Provides easy visual identification and corrosion resistance.
- Green Ring Identification: Color-coded for quick and reliable bur selection chairside.
- Made in Germany: Manufactured to exacting quality standards.
Standard Classification
ISO: 500 204 001 019 021 | US No. 7SXM | Busch Ref: 1SXM 021
Applications
This round SXM-cut carbide dental bur conforms to ISO classification 500 204 001 019 021, ensuring compatibility with standard RA (right-angle) slow-speed handpieces. Each pack contains 6 burs, providing excellent clinical value for busy dental practices.
The round SXM-cut 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 | 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 handpiece does this bur fit?
This bur is designed for RA (right-angle) slow-speed handpieces.
How many burs are included?
Each order includes a pack of 6 round SXM-cut carbide dental burs.
What is the ISO classification for this bur?
The ISO classification is 500 204 001 019 021, corresponding to US No. 7SXM.
What procedures is this bur suited for?
This round SXM-cut carbide dental bur is specifically suited for cavity and fissure preparation in restorative dentistry.
