AL-AMANA solid copper earth rods are made from high conductivity hard drawn copper. They are ideally suitable where soil conditions are very corrosive, such as soil with high salt and moisture content. These rods are also available with tin plating in order to reduce the risk of oxidation and increasing shelf life. Threads on the rods are formed by roll threading process giving extra strength to the threads and eliminating risk of chipping of threads while driving the rod in the ground.