The flusher helps remove sediment buildup at the bottom of the water heater, and the anode rod helps protect against corrosion caused by hot water. Ideal for RVs to help extend water heater tank life and save time and money. Extends the life of a water heater by attracting corrosive elements in the water. The anode rod reduces the effects of hot water on the tank, helping prolong the life of your water heater. Made from high-quality magnesium material. The magnesium rod uses electrolysis to attract oxidizing substances and contaminants in the water, protecting the metal tank from rust and ensuring long-term performance of your RV water heater. This RV water heater anode rod is 9-1/4 inches long with a 3/4 inch NPT connection and fits most RV water heaters. Using electrolysis, the anode rod draws contaminants to itself, helping prevent tank corrosion and mineral buildup, reduce odors, and extend the life of your RV, mobile home, and camper water heater. Material: Metal + plastic Color: Black + silver Package Contents: 1 x RV Water Heater Tank Flusher 2 x Anode Rod 1 x Tape (Note: Color may vary, specific color not guaranteed) Only the above items are included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations in color appearance. Measurement may vary by +/- 1-3 cm.