The ideal tool to replace scraper, wire wheels and chemical gasket strippers. Best used on softer metal such as aluminum. No wire to fly back at the operator. Maximum operating speed: 18,000. Use with 3M Roloc holder 05540. 3" White. Fine; 10 discs per box Use on aluminum parts for quick and safe removal. Bristles ride over surface cleaning contaminants without gouging surface. Also the maximum operating speed allows it to be used on die grinders. Use with 3M Roloc disc pad assembly (PN 05540) 10 discs per pack.