Flap Wheel, Abrasive Material Aluminum Oxide, Abrasive Type Coated, Backing Material Cotton, Backing Weight X, Grit P80, Series R207, Flap Width 1/2 in, Maximum Operating Speed 23, 000 RPM, Shank Size 1/4 In. -20, Overall Diameter 2 in, Grade Coarse, Shank Type Threaded, Coating Coverage Closed, Resistance Properties Wear