Unitized Wheel Abrasive Material Silicon Carbide Density Rating Medium (5) Grade Fine Series Bear-Tex Rapid Blend Face Width 1/2 in Maximum Operating Speed 20 000 RPM Overall Diameter 2 in Connector Size 1/4 in Connector Type Unthreaded Hole Quick Change System Not Applicable Abrasive Type Non-Woven Color Gray Grit 220