Always check propeller clearance after installing new trim tab anodes. Aluminum for salt and brackish water, magnesium for fresh water, zinc for salt water.
| Brand | Martyr Anodes |
| Case | 6 , 6 , 6 |
| Description | IPS Drive Transom Bar , IPS Drive Transom Bar , IPS Drive Transom Bar |
| Material | Alum. , Alum. , Alum. |