FITS: Almost all water heaters including: for Rheem, Reliance, Richmond, Kenmore, State, GE and many more that also use the standard 3/4 inch NPT Anode Rod Connection. EXTEND LIFE OF YOUR WATER HEATER: Magnesium anode rod gets corroded faster than tank of water heater. Usually you should check magnesium anode rod every 2 years. Replacing your anode rod at regular intervals may increase the life of your water heater, , time and the inconvenience of having to replace your water heater. ADVANTAGES OF MAGNESIUM ANODE RODS: Magnesium anode rods produce a stronger current than Aluminum rods making them more effective at keeping the water tank from corroding. Anode rod is expected to provide about two years of corrosion protection. Size: Length: 44 inches/ 1100mm Diameter: 0.8inch /21mm, 3/4inch NPT thread colour: silver Material: Metal Package Contents: 1 x Magnesium Anode Rod 1 x 1-1/16inch Hex Socket Tool 1 x PTFE Sealing Tape