Flap Disc Abrasive Type Coated Abrasive Material Zirconia Alumina Grade Medium Backing Plate Material Phenolic Connector Size 5/8 In.-11 Connector Type Threaded Hole Density Rating Standard Flap Disc Type Type 29 Overall Diameter 5 in Quick Change System Not Applicable Series Tiger Paw Backing Material Phenolic Backing Weight X Grit 80 Maximum Operating Speed 12 000 RPM