US No. 321 Busch Stainless Steel Mandrel | Busch No. 305RS 050 – HP | Pack of 6
The HP mandrel stainless disc mandrel dental instrument from Busch is a precision-engineered tool designed to meet the demands of modern dental practice. Manufactured in Germany, this disc mandrel provides reliable performance for mounting and driving polishing or abrasive discs in straight handpiece (HP) applications.
This is a US No. 321. See all 1 Busch versions — materials, shanks, cuts and packs — on our US No. 321 page.
Product Overview
This pack contains 6 units of the 305RS 050 (US No. 321) HP mandrel, offering excellent value for busy dental practices and laboratories. The stainless construction ensures corrosion resistance, longevity, and consistent handling across repeated sterilization cycles.
Standard Classification: ISO: 330 104 604 391 050
Key Features
- Stainless steel construction for enhanced durability and hygiene
- Compatible with straight handpiece (HP) systems
- Designed for secure disc retention during rotary procedures
- Pack of 6 for cost-effective clinical use
- Manufactured to ISO classification standards
Applications
As a reliable HP mandrel stainless disc mandrel dental solution, this instrument is suited for use with abrasive and polishing discs in restorative and finishing procedures. The mandrel design supports stable, centered disc rotation, contributing to controlled, accurate preparation and finishing work.
German Engineering
Busch & Co. GmbH has a longstanding reputation for producing high-quality dental rotary instruments. Every HP mandrel stainless disc mandrel dental unit reflects their commitment to precision manufacturing and consistent clinical standards. Made in Germany.
Podiatry Use
This stainless steel mandrel, Busch No. 305RS 050 (US No. 321), appears in Busch's podiatry catalogue alongside its polishing buffs and soft wheels as a rust-resistant carrier for them. It runs in a straight handpiece and is supplied in a pack of six. Find it with other podiatry bur accessories.
Instrument Dimensions
| Head Ø | 5.0 mm (ISO size 050) |
|---|---|
| Shank | HP (Straight Handpiece) — 2.35 mm Ø, 44.5 mm overall length (ISO 104) |
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 is this mandrel compatible with?
This mandrel is designed for use with straight handpiece (HP) systems.
How many units are included?
Each pack contains 6 mandrels.
Is the mandrel autoclavable?
The stainless steel construction is suitable for standard dental sterilization processes, though specific sterilization guidelines should be followed per your practice protocol.
What is the ISO classification?
The ISO classification for this instrument is 330 104 604 391 050.
Is the 305RS 050 mandrel part of Busch's podiatry range?
Yes. Busch lists the 305RS 050 stainless steel mandrel in its podiatry catalogue with its polishing buffs, as the carrier for mounting them. Its HP shank is the standard 2.35 mm straight handpiece shank and fits podiatry handpieces.
