Make of alloy, it can attract corrosive and rust, significantly extending the life of the water heater tanks. Adopting standard 3/4inch thread, suitable for most household water heaters. Effectively neutralize the sulfurs odors, ensuring and freshly water for showering, dishwashing, and daily use. rods produce a strong current than Aluminum rods making it more effective at keeping the water tanks from corroding. rod is expected to provide about two years of protections.