Mounted Flap Wheel, Abrasive Material Aluminum Oxide, Abrasive Type Coated, Backing Material Cotton, Backing Weight X, Grit 240, Series Not Applicable, Flap Width 5/8 in, Maximum Operating Speed 30,000 RPM, Shank Size 1/4 in, Overall Diameter 1 in, Shank Type Straight, Coating Coverage Closed, Resistance Properties Wear