Bulk Packaged 3 x 7.4 mm, 1/8 x 19/64 inch 240 Grit Flat End Cone Diamond Coated Burr, 1/8 inch shank. For use with Dremel Rotary Tools. Diamond coated accessories will cut into glass, wood, metal, stone, practically anything. For longer life, use with a cooling agent such as Eurotool Cut Lube. |