The Innovative Products of America 3" 3-in-1 Diamond Grinding Wheel, No. 8151, is designed for grinding, deburring, surface prepping, cutting sheet metal, fiberglass, and more. With three different cutting areas on each wheel, the 3-in-1 Diamond Grinding Wheel grinds, cuts, and undercuts, providing access and versatility for many applications. Through the use of a unique core bonding technology, the grinding wheel offers low sparks, odor, and debris. It is available in three sizes: 4.5″, 3″, 2″. The grinding wheel is for 1/4″ and 3/8″ arbor die grinders.