J1573 Flap Disc Abrasive Type Coated Abrasive Material Ceramic Grade Medium Backing Plate Material Phenolic Connector Size 7/8 in Connector Type Unthreaded Hole Density Rating High Flap Disc Type Type 27 Overall Diameter 4 1/2 in Quick Change System Not Applicable Series Tiger Ceramic HD Backing Material Phenolic Grit 80 Maximum Operating Speed 12 000 RPM Color Red Features Performance Coated