Boeshield T-9 was developed by the Boeing Company for lubrication and protection of aircraft components. It is a combination of solvents, lubricants, and waxes designed for penetration, moisture displacement, lubrication and protection. Boeshield T-9 dries to a thin waxy film that clings to metal for months. These properties make it ideal for bicycle chains, particularly in wet environments. Boeing also successfully tested T-9 in marine saltwater environments, and it protected against corrosion caused by the salt. If you ride on the beach or near the sea frequently, T-9 is likely the best choice short of manufacturing every piece from titanium. It will also loosen rusty and corroded parts and is safe on paints, plastics, and vinyls. 12oz. aerosol can. Please Note: Per UPS regulations, ORM-D items such as this must ship via surface: UPS Ground or UPS Standard (Canada). We are unable to ship ORM-D items Internationally, or to Alaska, Hawaii or Puerto Rico.