Use PropArmor to create a foul release” protective coating on propellers, prop shafts, outdrives, outboard motor lower units and sea strainers. The wax-like formulation is easy to apply and works without toxic chemicals which harm the environment. One eight ounce container covers one prop and shaft with two coats on a 40 foot vessel, or one outdrive and prop for a stern drive with two coats. Prop Armor can be applied as a liquid by brush, roller or rag or as a solid with a putty knife or rag.8oz.