Unitized Wheel, Abrasive Material Aluminum Oxide, Density Rating Medium (5), Grade Fine, Series Bear-Tex Rapid Blend, Face Width 1/4 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