Amazon.com: Astro 4608 6" PU PSA Backing Pad : Automotive
AB900-U95065 | 5 X 5/16-24 PSA PAD
Backing Pad 6" No Hole, PSA (For Dynabrade)
Dura-Gold Pro Series 6" PSA DA Sander Backing Plate Pad - Flexible Low Profile Edge, Dual-Action Random Orbital Sanding Pad, Vinyl Faced For Self- Adhesive Stickyback Sandpaper Discs - Auto Woodworking - Amazon.com
6 in. Hook and Loop Backing Pad for Dual Action and Random Orbit Polishers