100Pc Diamond Bur Bit Set New Rotary Tools 1/8" Shank This is a new set of 100 diamond coated burs This diamond bur set allows you to shape, grind and finish with precision Great for filing glass, ceramics, tile, brick, plastics, wood, fiberglass, stone, rock carbide, gold, platinum, silver, metals or anything else that is hard Recommended for jewelers, lapidary, hobbies and crafts, modeling, home repair, etc Assortment includes various sizes of round, cone, inverted cone, tree, bud, cylinder and knife edge burs