The Lucas Oil 10878 is a highly-rated product, utilized extensively by top firearm producers. Known for its capability to cleanse and polish various factory firearm finishes such as blue, nickel, stainless, aluminum, and brass, it undoubtedly stands as an industry leader in gun maintenance. Boasting an acid and ammonia-free formula, this product ensures a safe and effective stain and rust removal from metals, requiring no strenuous rubbing. One of its key features is its ability to provide an oxidation and tarnishing shield for the treated surfaces after application.As a tumbler media additive, the Lucas Oil 10878 excels in eliminating oxidation, powder residues, fingerprints, and other contaminants. It is perfect for leaving brass and nickel cases with a brilliant, polished shine.