Dynabrade 57852 3-2/3-Inch by 7-Inch Hook-Face Long Nap Non-Vacuum Dynabug Disc Pad Pads mount with screws High quality backup pad Weight-mated for smooth running and minimal tool vibration Hook-Face Pads Short nap pads for use with reattachable discs Long nap pads for use with non-woven nylon discs