Diamond Coated Wheel Jewelers Lapidary Rotary Tool 5/8 This is a new diamond coated grinding wheel 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 Recommended for jewelers, lapidary, hobbies, crafts, modeling, home repair, etc Longevity is assured as the diamond particles are electroplated onto the surface of the metal Can be used with a rotary tool