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 Vinyl, Density Medium, Maximum Operating Speed 13,000 RPM, Number of Vacuum Holes Non-Vacuum, Overall Width 5 in, Overall Diameter 5 in, Overall Thickness 3/8 in, Product Type Disc Backup Pad