Ceramic Connector Size 1 1/4 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 8 in Overall Thickness 3/4 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 3 600 RPM Series 5SG Grade Medium Bond Type Vitrified Color Blue Item Straight Grinding Wheel