Scotch-Brite™ Roloc™ bristle disc, using proprietary ceramic abrasive grain blended with aluminum oxide and molded, flexible bristles, provide more surface contact than wire brushes and retain abrasive properties throughout the life of the disc. Fast running disc combines superior cutting action with the 3M™ Roloc™ quick change attachment system to help you efficiently clean, strip, deburr, blend, finish, polish, scratch and remove rust and coatings without damaging the base material. Under normal use, bristles remain safely in place and can achieve the desired finish using light pressure. Scotch-Brite™ Roloc™ bristle disc works well on steel, aluminum and a variety of other metals, in general maintenance, as well as automotive and engine rebuilding applications.