Convolute Wheel, Abrasive Material Aluminum Oxide, Connector Size 1 in, Density Rating Hard (7), Grade Medium, Series Bear-Tex Series 1000, Face Width 2 in, Maximum Operating Speed 6,000 RPM, Overall Diameter 6 in, Abrasive Type Non-Woven, Coating Coverage Open, Color Light Brown, Grit 150, Package Quantity 2.