Unitized Wheel, Abrasive Material Ceramic, Density Rating Soft (4), Grade Medium, Series DP-UW, Face Width 1/4 in, Maximum Operating Speed 18,100 RPM, Overall Diameter 3 in, Connector Size 1/4 in, Connector Type Unthreaded Hole, Quick Change System Not Applicable, Abrasive Type Non-Woven, Coating Coverage Open, Grit Not Applicable, Resistance Properties Load