Reliable components provide a Mercury Bravo One outboard with excellent corrosion protection Designed for use in fresh water Cadmium-free and environmentally-friendly components Components conform to Mil-Spec A-21412(SH) Kit includes 1 anode plate for top of ventilation plate, 1 skeg for ventilation plate, 2 collar anodes for trim rams, 1 anode collar between prop and gear housing For sure installation, also includes 18 of the 8/304 Stainless Steel screws Manufacturer part number 50-95051