Flap Wheel, Abrasive Material Aluminum Oxide, Abrasive Type Coated, Backing Material Cotton, Backing Weight J, Grit P80, Series R369, Flap Width 3/8 in, Maximum Operating Speed 30,000 RPM, Shank Size 1/8 in, Overall Diameter 1 3/16 in, Grade Coarse, Shank Type Straight, Coating Coverage Closed, Resistance Properties Wear