Unique can within a can technology provides the hardener right inside the can. No more measuring and mixing. Just release the hardener and shake. Provides protection against rust and corrosion, plus excellent mar protection. Can be applied to all types of metal, plastic and wood. Can be applied over bare metal, parkerizing, anodizing and bluing. Enough for 2-4 firearms. No baking or preheating required. Each Duracoat Kit includes: One Duracoat Aerosol 12oz Can One 6oz TruStrip Cleaner/Degreaser One Scrubbing Pad