Flaring Cup Grinding Wheel Abrasive Material Aluminum Oxide Back Thickness 1/2 in Connector Size 1 1/4 in Connector Type Unthreaded Hole Grit 46 Overall Diameter 5 in Overall Thickness 1 3/4 in Rim Thickness 1/4 in Primary Material Applicationn Aluminum Cast Iron Stainless Steel Steel Tool Steel Compatible Tool Type Tool and Cutter Grinder Specification 32A46-KVBE Wheel Hardness K Wheel Type Type 11 Maximum Operating Speed 4 585 RPM Series 32A Bond Type Vitrified