Flap Disc, Abrasive Type Coated, Abrasive Material Ceramic, Grade Medium, Backing Plate Material Fiberglass, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Density Rating High, Flap Disc Type Type 29, Overall Diameter 4 1/2 in, Series 967A, Backing Material Cotton/Polyester, Backing Weight Y, Coating Coverage Closed, Grit 60, Maximum Operating Speed 13,300 RPM, Color Maroon, Features Performance Coated, Resistance Properties Gouge, Load