Busch Fig 446AU Carbide 70 Degree Hart Burs on 3/32" Shanks-Set of 15 .90mm-2.30mm

Cut accurate seats in prongs so stones sit level and secure. The Busch Fig 446AU Carbide 70 Degree Hart Burs are precision-engineered for exactly that job, and this complete set includes 15 burs on 3/32" shanks in a plastic storage box, covering sizes from 0.90mm through 2.30mm in 0.10mm increments, so jewelers and stone setters have the full range needed for consistent prong seat work.

Carbide burs are the longest-lasting burs available, outlasting both tungsten vanadium and high-speed steel burs. They perform exceptionally on the toughest metals, including platinum, titanium, and steel, while also delivering dramatically extended service life on standard gold alloys. Their advanced blade geometry, typically found only on steel tools, is achieved through state-of-the-art manufacturing in Germany.

Features

• 70-degree hart bur geometry engineered for precise prong seat cutting
• Carbide construction outlasts tungsten vanadium and high-speed steel burs
• Suitable for platinum, titanium, steel, and all standard gold alloys
• Advanced blade geometry normally reserved for steel tooling
• 3/32" shanks throughout the set
• Manufactured in Germany using state-of-the-art production techniques
• Complete set of 15 burs stored in a plastic box for organized access
• Also available individually by the piece

Notes

Related Busch carbide bur sets are also available: Fig 414AU 90-degree hart burs (part number BAU118.500) and Fig 413AU traditional setting burs (part number BAU118.835). All individual sizes from this kit are also sold separately.