Made from high-quality magnesium material, this magnesium anode rod attracts and absorbs oxidizing substances and contaminants in water through electrolysis, helping to prevent rust and corrosion in metal water tanks, ensuring long-term performance of your RV water heater. These magnesium anode rods are more effective than aluminum alternatives in attracting corrosive elements, protecting the water heater tank from deterioration and extending its service life. By attracting harmful minerals in the water, the anode rod sacrifices itself to protect the tank. If the rod becomes significantly depleted or fully corroded, the tank may begin to rust, crack, fail, and eventually leak. This magnesium anode rod measures 4.5 inches (115mm) in length, 0.5 inch (13mm) in diameter, with 1/2-inch threaded connection. Designed to fit standard water heaters. Recommended for use in RV water heaters. To drain the tank, unscrew the anode rod. Inspect the rod regularly; if it is mostly consumed, replace it with a new one. It is advisable to keep a spare on hand. Color: Silver Material: Magnesium Alloy + Steel Note: Due to different production batches, slight variations in appearance and color may occur. This does not affect functionality. Package Contents: 2 x RV Magnesium Anode Rods 1 x PTFE Tape (color may vary; specific color requests cannot be accommodated) Please note: Only the items listed above are included. Other accessories shown in images are not part of the package. Lighting and display settings may cause slight color differences between the product image and the actual item. Measurement may vary by +/- 1-3 cm.