Godfrey Premium Collar Zinc 5” – Marine Shaft Anode for Corrosion ProtectionGodfrey Premium Collar Zinc 5 is a heavyduty marine shaft anode designed to protect propeller shafts and underwater metal components from galvanic corrosion. This collar zinc installs directly onto the shaft and delivers reliable protection in saltwater environments. Zinc anodes work by sacrificing themselves to prevent corrosion of critical metal parts such as the propeller, shaft, and nearby hardware. This reduces the effects of electrolysis and