Stops corrosion on all metalsThis anti-corrosion lubricant/penetrant stops or prevents corrosion on all metals. Its hydrophobic chemistry acts like an "off switch" to prevent dissimilar metal corrosion. Leaves a non-toxic, non-greasy, clean, clear protective film that blocks corrosion in a wide variety of applications, including marine electronics, batteries, circuit panels, standing rigging, fishing gear and inboard or outboard motors. Harmless to most plastic or rubber found on your boat. 12oz. aerosol or 32oz. with Refill Sprayer