Busch Fig 446AU Carbide 70 Hart Burs 3/32" Shank .90mm-2.30mm By the Piece Bur Size:1.00mm these mountings arrive ready for

these mountings arrive ready for setting and sizing

9% of odors and fumes

The replaceable solid tips can be shaped to fine points by filing or grinding

and tanks are not included and must be sourced separately

File Length 6 inch / 150 mm (teeth only — tang not included) Cross Section (6") 10

Busch Fig 446AU Carbide 70 Hart Burs 3/32" Shank .90mm-2.30mm By the Piece Bur Size:1.00mm these mountings arrive ready forSold by the piece, Busch Fig 446AU carbide 70 hart burs are designed for cutting clean, accurate stone seats in prongs on precious and hard metals. The sharp carbide blades bite smoothly into the metal, providing a controlled, predictable feel at the handpiece. Features 70 hart profile engineered specifically for cutting prong seats for stone setting. Carbide construction for extremely long service life compared to steel or tungsten vanadium burs.