Overlap Slotted Disc, Abrasive Type Coated, Abrasive Material Aluminum Oxide, Connector Size #8-32, Grade Coarse, Grit 60, Overall Diameter 1 1/2 in, Series R228, Maximum Operating Speed 23,000 RPM, Overall Length Not Applicable, Overall Width Not Applicable, Backing Material Cotton, Backing Weight X, Coating Coverage Closed, Color Brown, Compatible with Brand Norton Abrasives, Compatible with Grainger Part Number 464P98, Compatible with Manufacturer Model Number 8834183163