20Pcs 400Grit 2.35mm Shaft Diamond Tapered Inverted Drill Bits

Tapered-inverted-cylinder-Shaped diamond burs are perfect for carving, grinding and pre-forming both hard and soft material such as glass, stones, ceramics, bone and metals. Each bur has a 1-1/2" long mandrel shank that's 3/32" in diameter and conveniently fits into a Foredom, Dremel with 3/32″ collet or any flex shaft hand piece that accepts 3/32″ diameter shank. Choose from ten different diameter sizes, Diamond tapered inverted cylinder diamond bur is evenly electroplated with diamond grit and impregnated onto steel, providing excellent quality for carving, grinding and pre-forming glass, stones, ceramics, bone and metals. The diamonds are locked into place to provide an extremely aggressive grinding rate. Simply lubricate with clean water before and during use.