The flusher helps remove sediment buildup at the bottom of the water heater, and the anode rod reduces corrosion caused by hot water. Ideal RV solution for extending water heater tank life. Extends the life of a water heater by attracting corrosive elements in the water. The anode rod reduces deterioration caused by hot water and prolongs the life of your water heater tank. Made from high-quality magnesium material. The magnesium anode rod attracts oxidizing substances and contaminants through electrolysis, preventing rust in the metal water tank and ensuring long-term performance of your RV water heater. The RV water heater anode rod is 9-1/4 inches long with 3/4 inch NPT threads and fits most RVs. The anode rod uses electrolysis to attract contaminants, 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: Random color, do not request specific color). Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight variations in color between the image and the actual item. Measurement allowance is +/- 1-3 cm.