Now you can rustproof and spray undercoating like the pros! The Eastwood Professional-Grade Gun is built to easily apply undercoating, anti-rust, soundproofing, protective waxes, gravel protection, and most bed liners. It allows for adjustable air and product flow so you can create a range of textures. The attached cup is tightly sealed to prevent any non-catalyzed products from hardening during work breaks. Included are 3 spray wands so you can apply products to the inside or doors, rocker panels, frame rails and many other hard to get to cavities. Requires 7-11 CFM at 45-60 PSI.