Seachoice 95611 Rudder & Trim Tab Anode W/Allen Screw, Magnesium, R4Mg, Size 5" Dia. X 5/8" - 95611 - 50-95611F1
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