Flap Wheel, Abrasive Material Aluminum Oxide, Abrasive Type Coated, Backing Material Cotton, Backing Weight X, Grit 120, Series Not Applicable, Flap Width 1/2 in, Maximum Operating Speed 35,000 RPM, Shank Size 1/4 in, Overall Diameter 1 1/2 in, Grade Medium, Shank Type Straight, Coating Coverage Closed, Resistance Properties Heat