Unitized Wheel, Abrasive Material Aluminum Oxide, Density Rating Soft (4), Grade Fine, Series Bear-Tex Rapid Blend NEX, Face Width 1/4 in, Maximum Operating Speed 12,000 RPM, Overall Diameter 3 in, Connector Size 3/8 in, Connector Type Unthreaded Hole, Quick Change System Not Applicable, Abrasive Type Non-Woven, Color Brown, Resistance Properties Smear