The 3M 07524 Scotch-Brite Roloc Bristle Disc is a fast-running abrasive disc featuring proprietary 3M Ceramic Abrasive Grain blended with aluminum oxide, designed for superior cutting action and long-lasting performance. It utilizes the 3M Roloc quick-change attachment system for fast, tool-free disc swaps during multi-step finishing processes. The molded, flexible, abrasive-filled bristles provide more surface contact than traditional wire brushes, effectively stripping, deburring, blending, finishing, polishing, cleaning, and removing rust and coatings without damaging the base material. Its bristle spacing is ideal for removing thick coatings, gaskets, and other high-loading materials. This green, coarse 50-grit disc works well on steel, aluminum, and various other metals in general maintenance, automotive, and engine rebuilding applications.