Unitized Wheel, Abrasive Material Aluminum Oxide, Density Rating Hard (7), Grade Medium, Series Bear-Tex Vortex Rapid Blend, Face Width 1/8 in, Maximum Operating Speed 15,000 RPM, Overall Diameter 3 in, Connector Size Not Applicable, Connector Type Quick Change, Quick Change System TR, Abrasive Type Non-Woven, Color Blue