Abrasive -Off Wheel, Abrasive Material Silicon Carbide, Grit 30, Connector Size 7/8 in, Connector Type Unthreaded Hole, Overall Diameter 4 1/2 in, Overall Thickness 0.0625 in, Compatible Tool Type Angle Grinder, Primary Material Applicationn Masonry, Series Masonry, Wheel Type Type 1, Maximum Operating Speed 13,580 RPM, Reinforced Status Reinforced