Convolute Wheel Abrasive Material Aluminum Oxide Connector Size 3 in Density Rating Hard (7) Grade Medium Series Bear-Tex Series 1000 Face Width 2 in Maximum Operating Speed 4 500 RPM Overall Diameter 8 in Abrasive Type Non-Woven Coating Coverage Open Color Light Brown Grit 150 Resistance Properties Shed Smear Package Quantity 2