Car Builder Supply 109 Sand Loc Roloc Quick Change Type R Disc Holder 3" x 1/4" Shank Grinding Polishing Sanding Disc Holder 3" diameter 1-1/4" holder for Roloc discs and pads Heavy duty rubber pad 1/4" shank fits power drills, die grinders, air grinders and other power tools Rated 20,000 RPM High Quality