Side Pocket Anode – Aluminum Used on most Mercury Verado and Optimax, Mariner 35-300hp, and Force 90 and 120hp outboards.Performance Metals Navalloyaluminum anodes are manufactured to the military specification MIL-DTL 24779 and are suitable for use in all water types- salt, brackish, or fresh.The anode includes the exclusive, patented red spot wear indicator.Replaces:Mercury # 826134Q. 2 required per outboard.Honda # 41109-ZW1-003 Specifications:Material: AluminumBox Dimensions: 2″H x 4″W x 6″L WT: 0.15 lbsUPC: 870648000515