Unitized Wheel, Abrasive Material Aluminum Oxide, Density Rating Hard (7), Grade Medium, Series CP-UW, Face Width 1/2 in, Maximum Operating Speed 30,100 RPM, Overall Diameter 1 1/2 in, Connector Size 1/4 in, Connector Type Unthreaded Hole, Quick Change System Not Applicable, Abrasive Type Non-Woven, Color Tan, Resistance Properties Load