Flap Disc, Abrasive Type Coated, Abrasive Material Ceramic, Grade 120, Backing Plate Material Fiberglass, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Density Rating Standard, Flap Disc Type Type 27, Overall Diameter 7 in, Series Predator FF, Backing Material Polyester, Backing Weight Y, Coating Coverage Closed, Grit 120, Maximum Operating Speed 8,600 RPM, Color Yellow, Resistance Properties Heat