The 2 ¾ inch Hook & Loop Backing Plate is made of a solid piece of heavy duty, molded plastic with a thick pad of urethane adhered to the bottom. The urethane has hooks & loops molded into it to hold pads in place as you polish.
The backing plate is threaded to fit any 5/8 inch shaft. It screws directly onto any circular polisher.
This small backing plate accommodates any 4 inch hook & loop foam pads.