Flap Disc, Abrasive Type Coated, Abrasive Material Ceramic, Grade Medium, Backing Plate Material Fiberglass, Connector Size 7/8 in, Connector Type Unthreaded Hole, Density Rating High, Flap Disc Type Radial, Overall Diameter 4 1/2 in, Series CO SGP CURVE, Backing Material Fiberglass, Backing Weight Consumable, Grit 60, Maximum Operating Speed 13,300 RPM, Features Performance Coated