Aluminum Oxide, Connector Size 3 in, Connector Type Unthreaded Hole, Grit 46, Overall Diameter 10 in, Overall Thickness 1 in, Compatible Tool Type Cylindrical Grinder, Surface Grinder, Tool and Cutter Grinder, Primary Material Applicationn Steel, Tool Steel, Specification 32AA46-IVTR, Wheel Hardness I, Wheel Type Type 1, Maximum Operating Speed 2,485 RPM, Series 32AA, Grade Coarse, Bond Type Vitrified, Color Blue, Item Straight Grinding Wheel