2 Pack RV Anode Rods for Water Heater, 3/4" NPT Thread, Safe to Use, Rustproof, Magnesium Material, Silver

General description Corrosion protection prolongs the life of your water heater by attracting corrosive elements from the water. The unique Suburban anode rod absorbs the corrosive effects of hot water, extending the life of your water heater tank. Technical specifications Material: Magnesium Length: 9.25 inches Thread: 3/4 inch NPT Socket size: 1-1/16 inches Usage Release the anode rod to drain the tank. If the rod is badly worn, replace it with a new one. Make sure you have a spare in your RV.