Seachoice 95616 Diver'S Anode, Magnesium, Size 6" X 4" X 1/2" - 95616 - 50-95616F1
Magnesium for fresh water only. High-quality, cadmium-free anodesHigher protection than zinc2.5 Times lighter than zincCorrodes less than zincIdeal for aluminum hullsInstallation hardware included