This Product is CRC Marine White Lithium Grease Rust and Corrosion spray on waterproof protection to be used on essentially everything you desire. Not even kidding, uses range from Marine Engines, Bicycle Chains, most importantly for our purposes, Trailer Parts! This is a must have corrosion protection spray for your truck and toolbox. Spray this on all surfaces that you desire to protect from rust. Use on the threads of bolts, Winch Gears, Lug Studs, Latches, anywhere! Simply re-apply when doing simply maintenance to your trailer, or when you walk by wishing you could take it out. Keep it in you truck to be used on work equipment as well! This is a 10 oz can for easy storage and portability. Application is simple, apply multiple even coats to the clean surface of the intended area for protection using the extension tube provide with this can. One can of this product will pay for itself quickly when applied to all those products that previous experienced rust and corrosion.