New heavy duty rubberized undercoating for the Mercury or Ford. Heck, it can be used on ANY car. This body shop proven formula is used to protect against road salt, moisture and corrosion. To be used on the inner aprons and fenders, frame rails, fuel tanks, rocker panels, under hoods and firewall. Basically, anything you want to protect under your pride and joy will be encapsulated and protected with this heavy duty rubberized undercoating.