Flap Wheel, Abrasive Material Aluminum Oxide, Abrasive Type Coated, Backing Material Cotton, Backing Weight X, Grit P120, Series R369, Flap Width 1 in, Maximum Operating Speed 25,000 RPM, Shank Size 1/4 in, Overall Diameter 1 1/2 in, Grade Medium, Shank Type Straight, Coating Coverage Closed, Resistance Properties Wear