The magnesium anode able to give more electrochemically negative to prevent your tank dissolving itself with reasonable costs. Its best choice for your replacement if you do have smelling water problems. SIZE - Flexible 44 Inch-long anode rod is hinged into four parts. Each part is less than 12 Inches allowing you to replace anode rods easily even in a narrow space. Just safely cut it shorter with a simple hacksaw. MAGNESIUM ANODE ROD KIT - The best choice to extending service life of your water heater tank from corroding is replacing water rod! This water heater anode rod makes it simple with everything you need, Anode Rod, Teflon Sealing Tape and 1-1/16 chrome finished socket, all in one box. FITS - Almost all water heaters including; A.O. smith,Rheem, Reliance, Richmond, Kenmore, State, GE and many more that also use the standard " NPT Anode Rod Connection. REPLACEMENT EASILY - Anodes are designed to be easily and regularly replaced. Their only purpose is to decay instead of your water heater, and that's exactly what it will do. As soon as the anode rod is depleted and fully decayed, the water heater begins to rust, then crack, fail and leak. Inspecting and changing your anode rod every 2 years will keep your water heaters tank, strong reliable and off your mind!