Ceramic Connector Size 1 1/4 in Connector Type Unthreaded Hole Grit 46 Overall Diameter 8 in Overall Thickness 1/2 in Compatible Tool Type Cylindrical Grinder Surface Grinder Tool and Cutter Grinder Primary Material Applicationn Cast Iron Nickel Alloy Stainless Steel Steel Titanium Specification 5NQ46-I8VS3 Wheel Hardness I Wheel Type Type 1 Maximum Operating Speed 3 105 RPM Series Quantum Grade Coarse Bond Type Vitrified Color Green Item Straight Grinding Wheel