› 3M 3M-83489 Rubber Roloc Back-Up Pad Size - 4, Hardness - Hard

Hard rubber Backup pad designed to support 3M Roloc 4" diameter abrasive discs. This pad has a 5/8"-11 internal thread which allows it to be mounted directly to tools with 5/8"-11 external threaded shafts. Large Hex Nut (11/16 inch hex).