2"-Diameter holder for roloc-type discs and pads - excellent quality, made in Taiwan heavy-duty rubber pad, aluminum core with nickel-plated removable steel shank 1/4" shank fits power drills, die grinders, air grinders and other power tools accepts sanding, polishing, surface conditioning/preparation, bristle and other disc consumables rated 20,000 rpm, 1-1/2"l shank, overall height 2-5/8"; 2.5 Oz. Also 3" diameter.