TotalBoat Outdrive AF Aerosol Spray Paint for Propellers & Underwater Metals Inhibits corrosion on propellers, outdrives, shafts, struts, trim tabs, and other underwater metals. Contains 4.00&#37; zinc oxide to keep metals surfaces smooth in service. Fast-drying formula. At least 2 coats are recommended for excellent single-season protection. Adheres strongly to properly prepared metals including aluminum, brass, bronze, stainless steel, cast iron, and galvanized steel. Available in a 12 oz. aerosol spray. Color: Matte Black. Finish: Flat. Coverage: 21 sq. ft. @ 2 mils dry film thickness (DFT)