Ceramic Connector Size 3 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 12 in Overall Thickness 1 in Compatible Tool Type Cylindrical Grinder Surface Grinder Tool and Cutter Grinder Primary Material Applicationn Cast Iron Nickel Alloy Stainless Steel Steel Titanium Specification 5SG60-KVS Wheel Hardness K Wheel Type Type 1 Maximum Operating Speed 2 070 RPM Series 5SG Grade Medium Bond Type Vitrified Color Blue Item Straight Grinding Wheel