PSA Disc Backup Pad Abrasive Mount Type Adhesive-Backed Abrasive Mounting Quick Change System Not Applicable Connector Size 5/16 In.-24 Connector Type Threaded Shaft Backup Pad Shape Round Device Material Foam Density Medium Maximum Operating Speed 15 000 RPM Number of Vacuum Holes Non-Vacuum Overall Width 6 in Overall Diameter 6 in Overall Thickness 1/2 in Product Type Disc Backup Pad Features Tapered