SCREWFAST Earth Rods are made from high tensile-low carbon steel
compling with requirements of BS 4360 Grade 43 A. Each rod is
molecularly bonded by 99.99% pure, high conductivity copper
bondings, each rod is treated with Benzol-triozole derivatives.
Threads on rods are formed by roll threading process, giving
threads extra strength, eliminating risk of chipping the threads
while driving the rods in the ground.