Eastwood Internal Frame Coating w/Spray Nozzle
Product Review (submitted on November 10, 2012):
Used it to keep the rockers from rusting out on my Silverado. The salt they use seems to eat them up on the other trucks I have seen, The 2ft tube works great to get into the long extended cab rockers! Just don't lay under the truck while doing it! It leaks out of the water holes onto you, Ask me how I know!