AMSOIL Heavy-Duty Metal Protector (AMH) is an easy-to-use spray-on product that protects metal surfaces exposed to the damaging effects of salt, moisture or chemical corrosion. Ideal for steel, iron, aluminum, brass, copper and other metal surfaces. Resilient, durable anti-corrosion formula protects metal components, equipment and tools up to several years depending on application and environment. Displaces water. Dries to an amber, wax-like coating. Does not wear off easily. Protects metal from the effects of water, salt and high humidity.