Joysun Black DC cleaning and strip-it discs are composed of a special rugged non-woven synthetic nylon web fibers coated with high purity extra-coarse silicon carbide grains. This kind of products is suitable for use on angle grinders. The 3D structures of Strip-it discs will help to provide aggressive performance that outperforms traditional coated abrasive products. They are used to complete the toughest cleaning jobs for fast removal of surface contaminants such as rust and sealants. The strip-it discs are particularly suited for stainless steel.