Straight Cup Grinding Wheel, Abrasive Material Aluminum Oxide, Back Thickness 1/2 in, Connector Size 1/2 in, Connector Type Unthreaded Hole, Grit 46, Overall Diameter 6 in, Overall Thickness 1 1/2 in, Rim Thickness 1 in, Compatible Tool Type Tool and Cutter Grinder, Primary Material Application Aluminum, Cast Iron, Stainless Steel, Steel, Tool Steel, Specification 32A46-KVBE, Wheel Hardness K, Wheel Type Type 6, Maximum Operating Speed 3,820 RPM, Bond Type Vitrified, Series 32A