Fiber Disc, Disc Diameter 7 in, Mounting Hole Size 5/8 in, Abrasive Type Coated, Abrasive Material Ceramic, Abrasive Grit 80, Abrasive Grade Coarse, Disc Backing Material Fiber, Backing Weight Not Rated, Max. RPM 8,600 RPM, Series 987C, Color Brown, Package Quantity 25