Abrasive Cut-Off Wheel, Abrasive Material Aluminum Oxide, Grit 24, Connector Size 3/8 in, Connector Type Unthreaded Hole, Overall Diameter 4 in, Overall Thickness 0.125 in, Compatible Tool Type Die Grinder, Primary Material Application Cast Iron, Steel, Series A24R, Wheel Type Type 1, Maximum Operating Speed 15,278 RPM, Reinforced Status Reinforced, Bond Type Resin