1Magnesium rod, also known as anode rod, is mainly composed of magnesium. 2In the water heater liner, it and the inner liner (mainly iron) are in contact with water at the same time. Due to the chemical principle, the primary battery is formed, which can prevent corrosion and scale. 3When the water temperature exceeds 40, scale will be generated in the water heater. The combination of magnesium rod and iron can protect the inner container from corrosion. 4Made of environmentally friendly magnesium alloy for durability 5Suitable for large hot water tanks such as motorhomesFeatures: _x000D_1. Magnesium rod, also known as anode rod, is mainly composed of magnesium. _x000D_2. In the water heater liner, it and the inner liner (mainly iron) are in contact with water at the same time. Due to the chemical principle, the primary battery is formed, which can prevent corrosion and scale. _x000D_4. When the water temperature exceeds 40, scale will be generated in the water heater. The combination of magnesium rod and iron can protect the inner container from corrosion. _x000D_3. Made of environmentally friendly magnesium alloy for durability _x000D_4. Suitable for large hot water tanks such as motorhomes _x000D_ _x000D_Specification: _x000D_Condition: 100% Brand New _x000D_Product Material: AZ31B Environmental Magnesium Alloy _x000D_Product Standard: EU Environmental Standards _x000D_ _x000D_Package List: _x000D_1 * Water Heater Anode Rod