Recessed Grinding Wheel Abrasive Material Aluminum Oxide Connector Size 3/8 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 2 in Overall Thickness 1 in Wheel Hardness K Specification 32A60-KVBE Wheel Type Type 5 Compatible Tool Type Cylindrical Grinder Surface Grinder Primary Material Applicationn Aluminum Cast Iron Stainless Steel Steel Tool Steel Maximum Operating Speed 16 235 RPM Recess Depth 1/2 in Recess Diameter 3/4 in Bond Type Vitrified Color Gray