This 5" (125 mm) polyurethane backing plate with a 5/16" (24) threaded post is a direct replacement for the Original Dual Action Polisher.
Designed specifically to work with Shurhold's Award winning Dual Action Polisher.
5" (125 mm) polyurethane backing plate with 5/16" (24) treaded post
Quick release hook and loop system, works with most 5.5" - 6.5" (140 -165mm) Velcro style pads
Confirm that your polisher is OFF and UNPLUGGED. Using the wrench that was supplied with your polisher engage the backing plate nut and unscrew old backing plate. Reverse this process to screw on new backing plate.
I ordered part that matched the model polisher I have and the one I received had the wrong size shaft I really needed to get this polisher working so I ordered a new on through Home Depot. Tossed my old one. Not reall happy