Aluminum Oxide 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 Nickel Alloy Steel Tool Steel Specification 25A46-HVBE Wheel Hardness H Wheel Type Type 1 Maximum Operating Speed 3 105 RPM Series 25A Grade Coarse Bond Type Vitrified Color Pink Item Straight Grinding Wheel Package Quantity 5