CST's telescoping aluminum rods are made of a light and durable aluminum alloy. The anodized sections are imprinted with special weather resistant and corrosion resistant inks. Tight tolerances on extruded aluminum sections allow for smooth extension and prevent unnecessary clattering and slopiness. The sectional joints are injection molded from a durable lightweight impact-resistant plastic. Rods are equipped with reliable and wear resistant polycarbonate buttons that lock each section. Easy to read graduations and a special measuring scale on the back side permit users to read height at eye level.