Hook-and-Loop Disc Backup Pad Abrasive Mount Type Hook and Loop Abrasive Mounting Quick Change System Not Applicable Connector Size 5/16 In.-24 Connector Type Threaded Shaft Backup Pad Shape Round Device Material Urethane Density Medium Maximum Operating Speed 13 000 RPM Number of Vacuum Holes Non-Vacuum Overall Width 6 in Overall Diameter 6 in Overall Thickness 3/8 in Product Type Disc Backup Pad Features Short Nap Hook Type