21 Diamond Coated Burs Bead Hole Reamers Handle Tools 20 Diamond Coated Burs This is a new set of 20 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 Provides uniform cutting on wide a variety of materials Use water for lubricant All have a 1/8" (2.5 mm) shank File Handle This is a new red file handle Accepts broken saw blades for wax filing Use as a hand drill with small twist drill bits Use as a screwdriver with small screwdriver blades It measures approximately 4 1/2" (114 mm) long Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.