HARD-ON by woolwax™ 4 Gallon Pail Auto Truck Undercoating Black Water Based Corrosion Inhibitor Coating Non-Rubber Stops Rust Chip Guard Sound Deadener Solvent Free

Hard-On high performance permanent hard undercoating. NOT rubber.

Hard-On is developed to be applied on newer surfaces. It is not intended to be used on surfaces with surface rust. (Use original Woolwax for rusted frames)

Expected life expectancy is 5-10 years depending on vehicle use.

Ideal product for very long-term vehicle protection as well as trailers, RV’s, school buses, motor homes, truck box trailers, delivery trucks, and more.

Ideal product for very long-term vehicle protection as well as trailers, RV’s, school buses, motor homes, truck box trailers, delivery trucks, and more.

This is NOT a rubber coating. It dries to a very hard shell paint-like black coating.

Incredible durable protection from salt, rust, moisture, and road debris. Acts as a chip guard.

Acts as a sound and vibration deadener.