3M™ Hookit™ Disc Pad Firm 77751, 8 in x 5/16 in x 7/8 in x 5/8-11 Internal
For use with 8 inch diameter Hookit™ discs. Made with a resilient hub and a medium density foam construction for durability. Used for sanding of metal, wood, paint, etc. Fits sanders with 5/8-11 external threaded shank.