Designed to support 3M(TM) Roloc(TM) 4 inch diameter abrasive discs. Thread allows it to be mounted directly to tools with 5/8-11 EXT threaded shafts. Large hex nut (11/16 inch hex)
For use with 3M Roloc TR Roloc TSM discs and “screw onâ€? abrasive discs
Pads are internally threaded to receive any standard 1/4"–20 thread shaft