Diamond Hole Saw Metal Lapidary Rock Cutting fit Dremel This is a new diamond coated hole saw This is great for filing glass, ceramics, tile, brick, plastics, wood, fiberglass, stone, rock carbide, gold, platinum, silver, metals or anything else that is hard Longevity is assured as the diamond particles are electroplated onto the surface of the metal Recommended for jewelers, lapidary, hobbies, crafts, modeling, home repair, etc Can be used with a Dremel tool