Primocon is an anticorrosive primer for underwater metal surfaces (including hulls, running gear, and the lower units of outboards and I/O's). It will provide an excellent barrier to reduce pitting of the metal from galvanic corrosion. An excellent primer for antifouling paint over sanded fiberglass. Also suitable as a barrier/sealer coat over incompatible or unknown antifouling. HAZARDOUS! This item is considered hazardous freight. Additional charges may be applied to your order at time of shipment.