3M™ Silver Cut-Off Wheel, Straight, 3 in Wheel Dia, 0.06 in Wheel Thickness, Ceramic Abrasive, 25465 rpm Maximum, Resin Bond, Applicable Materials: All Metals, Aluminum, Carbon Steel, Cast Iron, Soft Metal and Stainless Steel, 3/8-24 Center Hole Thread Size, Wheel Type Number: Type 1, Yes Reinforced, ANSI B7.1 Specifications Met