Surface-Conditioning Disc, Abrasive Material Aluminum Oxide, Grade Very Fine, Overall Diameter 6 in, Series High Strength, Maximum Operating Speed 4,000 RPM, Connector Size 1/4 in, Connector Type Unthreaded Hole, Abrasive Type Non-Woven, Backing Material Fiber, Backing Weight X, Color Maroon, Grit 180-360, Resistance Properties Tear, Package Quantity 70