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 | 40 , 40 , 40 |
| Description | IPS Drive In-take , IPS Drive In-take , IPS Drive In-take |
| Material | Zinc , Zinc , Zinc |