Silicon Carbide Connector Size 1 1/4 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 8 in Overall Thickness 1/2 in Compatible Tool Type Cylindrical Grinder Surface Grinder Tool and Cutter Grinder Primary Material Applicationn Aluminum Brass Bronze Cast Iron Masonry Natural Stone Stainless Steel Titanium Specification 39C60-IVMT Wheel Hardness I Wheel Type Type 1 Maximum Operating Speed 3 600 RPM Series 39C Grade Medium Bond Type Vitrified Color Green