Flap Disc Abrasive Type Coated Abrasive Material Zirconia Alumina Grade Coarse Backing Plate Material Plastic Connector Size 5/8 In.-11 Connector Type Threaded Hole Density Rating Standard Flap Disc Type Type 27 Overall Diameter 7 in Series Gemini R766 Backing Material Cotton Backing Weight X Grit P60 Maximum Operating Speed 8 600 RPM Color Blue Features Trimmable