3M 5" RIB PLATE MED051144-81734

3M™ 3M 4 HARD 5/8 11FEM051144-83489 7000120516

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).