This Rheem Anode Rod is a crucial component designed to protect your water heater from corrosion. With a diameter of 0.750 inches and a length of 53-3/8 inches, it is constructed from magnesium, which is known for its excellent sacrificial properties. The rod works by attracting corrosive elements present in the water, thereby preventing them from damaging the tank. It features a hex head for easy installation and removal, and it's compatible with most standard water heaters. Regular inspection and replacement of this anode rod can significantly extend the lifespan of your water heater.