Features and Benefits: The ideal tool to replace scraper, wire wheels and chemical gasket strippers; Best used on softer metals such as aluminum; No wire fly back at the operator; Maximum operating speed: 25,000 RPM; Use with 3M Roloc holder 05539; 2" 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 made with the maximum operating speed that allows it to be used on die grinders. Use with 3M Roloc disc pad assembly (PN 05539)