Flap Wheel, Abrasive Material Aluminum Oxide, Abrasive Type Coated, Backing Material Cotton, Backing Weight X, Grit P120, Series R207, Flap Width 1 in, Maximum Operating Speed 20,000 RPM, Shank Size 1/4 in, Overall Diameter 3 in, Grade Medium, Shank Type Straight, Coating Coverage Closed, Resistance Properties Wear