Magnesium for fresh water only.
- High-quality, cadmium-free anodes
- Higher protection than zinc
- 2.5 Times lighter than zinc
- Corrodes less than zinc
- Ideal for aluminum hulls
- Installation hardware included
| Brand | Seachoice |
| Case | 30 |
| Material | Magnesium |
| Model | R3 |
| Size | 3-3/4" dia. x 1/2" |