This Precision® cylindrical unthreaded rod is made of anodized aluminum. It has a diameter of 3/4" and measures 36" long. This tube is mechanically age-hardened for additional strength. It is made of a material that can be worked with ordinary hand tools; it can be easily cut and drilled. Lightweight and highly corrosion-resistant, anodized aluminum can be used for exterior applications, unlike mill finish aluminum.