The must for rust 32 Oz rust inhibitor and remover. Removes rust and protects metal. It dissolves rust and oxidation leaving a clean metal surface for painting inhibits future rust formation up to 12 months. If left bare, use on metal, galvanized, aluminum, stainless steel, chrome, brass, concrete, brick, porcelain, ceramic and more spray, brush or dip. Works in 15 To 30 minutes safe to use water based product no harsh or caustic chemicals and covers 300 to 500 Sq Ft per Gal.