Our fast-running disc combines superior cutting action with the 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. Bristle Disc works well on steel, aluminum and a variety of other metals, in general maintenance, as well as automotive and engine rebuilding applications.