The United Abrasives UA SAIT 3″ Coarse Surface Conditioning Discs 77212 are a set of 20 non-woven discs designed for sanding and surface conditioning. Made with a combination of non-woven synthetic fiber and aluminum oxide grain, these discs are suitable for use on stainless steel, metal, and wood surfaces. The coarse grit size makes them ideal for removing old finishes or leveling surfaces before a final polish or smooth finish. Perfect for professionals and DIY enthusiasts alike, these discs provide efficient and effective sanding results.