0.625 in. Diameter x 42 in. Long Aluminum Anode Rod for Water HeatersFits most brands: Rheem, Ruud, Richmond, GE, State, Kenmore, Bradford White, AO Smith, American, Craftmaster, Lochinvar, Reliance, GS Wood, Mor Flo and Whirlpool Helps prolong the life of your water heater (sold separately) Aluminum construction 3 4 in. NPT fitting 1 year limited warranty Helps eliminate water odor 42 Inches long Call 1 800 432 8373 to ensure this is the correct part for your water heater Can be cut to length to fit various water