Silicon Carbide Connector Size 1/2 in Connector Type Unthreaded Hole Grit 80 Overall Diameter 3 in Overall Thickness 1 in Primary Material Applicationn Aluminum Brass Bronze Cast Iron Copper Masonry Natural Stone Stainless Steel Titanium Specification 37C80-MVMT Wheel Hardness M Wheel Type Type 1 Maximum Operating Speed 10 825 RPM Series 37C Grade Medium Bond Type Vitrified Color Black Item Straight Grinding Wheel Package Quantity 5