Flaring Cup Grinding Wheel Abrasive Material Ceramic Back Thickness 1/2 in Connector Size 1 1/4 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 4 in Overall Thickness 1 1/2 in Rim Thickness 1/4 in Primary Material Applicationn Cast Iron Nickel Alloy Stainless Steel Steel Titanium Compatible Tool Type Tool and Cutter Grinder Specification 5SG60-JVS Wheel Hardness J Wheel Type Type 11 Maximum Operating Speed 5 730 RPM Series SG 5SG CA Bond Type Vitrified