Silicon Carbide Connector Size 1 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 6 in Overall Thickness 1 in Compatible Tool Type Bench Grinder Primary Material Applicationn Cast Iron Stainless Steel Steel Tool Steel Specification C60-VK Wheel Hardness V Wheel Type Type 1 Maximum Operating Speed 4 140 RPM Reducer Bushing Size 1/2 in 5/8 in 3/4 in 7/8 in Grade Medium Bond Type Vitrified Color Green Item Straight Grinding Wheel