GLIPTONE's Coarse Abrasive Grade Metal Polish is recommended for use as a stripping and smoothing agent on rough heavily oxidized, or corroded non-plated metals. It functions in a similar manner to liquid sandpaper, and should be followed by GLIPTONE's Medium Grade Abrasive Metal Polish or GLIPTONE's Ultra Fine Grade Abrasive Metal Polish to achieve a brilliant shine. DO NOT use on mirror stainless, chrome, nickel or any other plated materials. NOTE: These Gliptone polishes contain no ammonia, acid or water, allowing them to apply and remove easier making this product go twice as far as equal amounts of any other metal polishes. GLIPTONE Metal Polish seals and protects with penetrating oils and polymer sealant for a long lasting brilliant shine.