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 4 1/2 in, Series Predator Ambush, Backing Material Polyester, Backing Weight Y, Coating Coverage Closed, Grit 120, Maximum Operating Speed 13,300 RPM, Color Pink, Resistance Properties Heat