Aluminum Oxide Connector Size 1/2 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 3 in Overall Thickness 1 in Primary Material Applicationn Nickel Alloy Steel Tool Steel Specification 38A60-MVBE Wheel Hardness M Wheel Type Type 1 Maximum Operating Speed 10 825 RPM Series 38A Grade Medium Bond Type Vitrified Color White Item Straight Grinding Wheel Package Quantity 5