Extends the life of a water heater by attracting corrosive elements in the water. The exclusive suburban anode rod absorbs the corrosive action acused by hot water and prolongs the life of your water heater tank. Made using high-quality magnesium-material. Our magnesium-rod absorb oxidizing substances and all the contaminants in the water towards itself by electrolys, preventing the water tank from rusting in the metal water tank, ensuring your RV water heater lasting use. These magnesium anode rods are 9.15 inch long/235mm, 0.82 inch diameter/21mm, 3/4inch NPT threads,fits for suburban 232767 and for Mor-Flo 6 Gallon water heater anode rod. Unscerw the anode rod to drain the tank. If the rod is mostly eaten away, replace with a new one. Always keep a spare in your RV. Colour:silver + black Material:Magnesium Alloy + Steel Different batches, the appearance and color of the anode rod may be different from the picture, which does not affect Package Contents: 2 x RV magnesium anode rods 1 x PTFE tape (the color of the tape is random, don't accept the specified color) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.