Features: 1.Applicable Models: Water heater anode rod is for almost all water heaters with 3/4in NPT Anode Rod Connection, replacement for A.O. smith, and replacement for State. 2.Main Function: Anode rods act as a powerful filter for the water stored in the heater, protecting your water heater from damage and help to prolong the life of the water heater. 3.Reliable and Safe: Crafted from high grade magnesium alloy, the hot water heater anode rod exhibits outstanding durability and is not potentially dangerous and safer for human body. 4.Advanced Material: Hot water heater anode rod is made of premium material, which is high hardness, reliable, safe, sturdy and durable and has a long service life. 5.Easy Installation: The magnesium anode rod is designed to be easy to install, so you can easily and quickly install it, saving time and money on installation costs. Specification: Item Type: Anode Rod_x000D_ Material: Magnesium alloy + aluminum_x000D_ Magnesium Rod Size: Approx. 21 x1100mm/0.8x43.3in (Diameter x Length)_x000D_ Magnesium Rod Length: 43 inches_x000D_ Thread Size: 3/4in NPT_x000D_ Fitment:_x000D_ For Almost all water heaters with 3/4in NPT Anode Rod Connection_x000D_ _x000D_ Replacement for A.O. smith_x000D_ Replacement for Rheem_x000D_ Replacement for Reliance_x000D_ Replacement for Richmond_x000D_ Replacement for State_x000D_ Replacement for GE