Ryobi Rs 112 Backing Pad. 4.1 out of 5 stars 21. The manufacturer no longer makes this part, and there's no substitute part #6.
Buy ryobi 971790001 backing pad rs112. The purpose of the 900482001 conversion pad is to convert the psa (adhesive sand paper) pad to a hook and loop pad. Sold by amazom usa store and ships from amazon fulfillment.