Quicksilver 888760Q03 Magnesium Anode Kit - MerCruiser Bravo II and Bravo III Drives For fresh water Use only Complete four-piece magnesium anode kit with attaching hardware for fast and easy replacement Produced to Meet Mercury marine original equipment Manufacturer specifications to best protect your mercuries bravo II & III drive and engine Inspect anodes periodically for best protection and reduced maintenance costs Cast with magnesium to meet or exceed Mil-Spec A-21412(SH) standards