Martyr anodes provide low-cost marine protection for boats, marine structures, and boat equipment. Magnesium "Fresh" anodes are specifically designed for use in freshwater environments. Martyr marine anodes are made of a specialized alloy based on the U.S. Mil Spec using only high-purity metals. Weight: 1.2 lbs. Model#: CMSXAKITM. KIT INCLUDES:* CM3841427X1 Anode* CM3883728X1 Anode* Fastening Hardware* Installation Instructions CM3841427X1 and CM3883728X1 anodes included Fastening hardware; installation instructions | Volvo Penta Anode Kit for SX-A/DPS Engines - Magnesium