Busch 447AU Pave Cut Carbide Twist Drill Assortment of 9 On 3/32" Shanks 0.80mm-1.60mm Knew Concepts Years of development have produced

Years of development have produced a tungsten carbide graver with the right metallurgical balance of hardness and toughness — engineered specifically for hand engraving and stone setting applications

High-polish hole surfaces reduce friction and extend tool life

propane gas is recommended

Filters sold separately — choose the correct cartridges for your application

Busch 447AU Pave Cut Carbide Twist Drill Assortment of 9 On 3/32" Shanks 0.80mm-1.60mm Knew Concepts Years of development have producedThe Busch 447AU Pav Cut Carbide Twist Drill Assortment gives jewelers a versatile, time saving set engineered specifically for pav setting work. Each bur in this 9 piece collection combines a twist drill and a round bur into a single tool pre drilling and seat shaping happen in one pass, eliminating the need to switch tools mid process. The result is improved precision, consistent stone seats, and a faster overall workflow. All nine burs are