Busch Fig. 415 Knife Edge Bur Kit of 11 - 1.0mm - 2.0mm Polishing Aids The GRS 003-550 Leather Ring

The GRS 003-550 Leather Ring Clamp Set gives jewelers and engravers a reliable way to hold rings securely from the outside using GRS blocks and vises

Duplex springs and duplex spring adapters are easily damaged and carry no warranties

Powered by a single SR44 (357 type) button cell battery

Made in the USA from American-made carbon steel

Handle-only listing — tips sold separately

Busch Fig. 415 Knife Edge Bur Kit of 11 - 1.0mm - 2.0mm Polishing Aids The GRS 003-550 Leather RingThe Busch Fig. 415 Knife Edge Bur Kit contains one each of 11 burs ranging from 1. 0mm to 2. 0mm, packaged together in a plastic storage container. This assortment gives stone setters a complete progression of sizes in a single purchase, eliminating the need to source each bur individually. Busch Fig. 415 burs also known as Lens burs feature a 55 degree angle that produces narrow, precise cuts in precious metals. This geometry is especially well