4-1/2 x 1/4 x 7/8 Fast Cutting Abrasive
Depressed Center Grinding Wheel, Abrasive Material Aluminum Oxide, Connector Size 7/8 in, Connector Type Unthreaded Hole, Grit 24, Overall Diameter 4 1/2 in, Overall Thickness 0.25 in, Primary Material Applicationn Steel, Compatible Tool Type Angle Grinder, Series Metal AO, Wheel Type Type 27, Maximum Operating Speed 13,300 RPM, Grade Extra Coarse.