Star brite Ultimate Corrosion Blocker Spray is the most effective way to protect the metal hardware and wiring harnesses on cars, trucks, motorcycles, boats, ATVs, tools and equipement from damage caused by oxidation. Special polymers bond to the surface to create a long-lasting barrier to salt, moisture and grime that can damage engine blocks, trim & tilt rams, lug nuts, trailer frames, marine hardware and all other metal surfaces. The dielectric formula makes it an ideal way to shield wiring terminals, battery posts and other electrical components from the elements. It is no-conductive and will not create a messy, sticky residue like traditional aerosol lubricants. DIRECTIONS: Shake bottle before use. Spray directly onto surface to be shielded. Wipe up any overspray with a paper towel or a cloth. Let dry. Use as needed to maintain a barrier against moisture and corrosion.