Unitized Wheel Abrasive Material Silicon Carbide Density Rating Soft (4) Grade Fine Series Bear-Tex Rapid Blend Face Width 3/4 in Maximum Operating Speed 8 000 RPM Overall Diameter 3 in Connector Size 1/4 in Connector Type Unthreaded Hole Quick Change System Not Applicable Abrasive Type Non-Woven Color Gray Package Quantity 20