Zinc: For use in salt water
Aluminum: For use in brackish water
Magnesium: For use in fresh water
| Brand | Martyr Anodes |
| _Case | 15 |
| _Case | 15 |
| _Description | Horseshoe Shape |
| _Description | Horseshoe Shape |
| _Material | Zinc |
| _Material | Zinc |
| Shipping Details | |
| Weight: | 1.77 lb |
| Length: | 5.8 in |
| Height: | 1.5 in |
| Width: | 4.1 in |