The metal installed by the antenna pole is galvanized steel, which has anti -rust coating to stop rust and corrosion for out of doors installation. This is awfully heavy.The rod set up bracket manufactured from 0.2 -inch thick galvanized metallic is robust satisfactory to carry heavy antennas.This antenna rod is easy to install, and makes use of a V JAW block with twin U -shaped bolts to ensure that the pole does not slide down.The rod set up seat can be used for fixed rods, with a diameter vary of 1.1 to 1.97 inches (30-50mm).It is extensively used for exterior antennas racks, can be used for constructing roofs or walls, and is acceptable for antennas.Color: SilverMaterial: steelPackage Contents:1 x Antenna Pole Mount KitsOnly the above kit content, other products are not included.Note: Light mirrored image and diversified displays may cause the color of the article within the picture slightly diversified from the real thing. The measurement allowed error is +/- 1-3cm.