Archoil AR5100 Rust Remover (16oz) Super Concentrate - 1:15 Dilution Concentrate 15:1 dilution - Makes 2 Gallons Ferrous and non-ferrous metals pH neutral: NOT ACIDIC Works on ferrous and non-ferrous metals Brightens copper and other copper based alloys Fast-acting (Results in as little as 30 minutes) Non-flammable and non-toxic Re-use many times before chemistry depletes