Martyr Streamlined Shaft Anodes, Aluminum, Imperial

Streamlined aluminum shaft anodes are the best choice for salt & brackish water. With 100% circular radius, interlocking halves and extra alloy around fastener, they last longer due to increased capacity.

• More efficient than zinc anodes
• Alloy meets or exceeds US Military Specification (Mil-A-24779 SH)
• 3-1/2 inch inside diameter
• 5.7 inch outside diameter
• 3.78 inch height
• Not recommended for use in freshwater