Price is for EA. Manufacturer Part Number: CM6K14537100Z Always check propeller clearance after installing new trim tab anodes. Looking to protect your boat from corrosion that can occur in salt brackish or fresh water? Then premium-grade Martyr anodes are the way to go. Pressure die-cast and made of a specialized alloy based on the US Mil Spec they offer corrosion protection and longevity unmatched by the competition. Plus these anodes are rigorously tested in the company s state-of-the-art laboratory so you can rest assured of their superior quality. NOTE: International deliveries are not available.