Diamond V-Wheel Lapidary Rock Grinding 3/8" This is a new diamond coated 80 grit cutting v-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 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