The metal installed by the antenna pole is electrified steel, which has anti -rust coating to stop rust and corrosion for outdoor installation. This is awfully heavy. The rod set up bracket made of 0.2 -inch thick galvanized steel is powerful satisfactory to carry heavy antennas. This antenna rod is simple to install, and uses a V JAW block with dual U -shaped bolts to ensure that the pole doesn't slide down. The rod installation seat can be used for fixed rods, with a diameter range of 1.1 to 1.97 inches (30-50mm). It is extensively used for exterior antennas racks, can be utilized for building roofs or walls, and is suitable for antennas. Color: Silver Material: steel Package Contents: 1 x Antenna Pole Mount Kits Only the above kit content, different products are usually not included. Note: Light mirrored image and diverse reveals can cause the colour of the article within the photograph a little different from the real thing. The size allowed error is +/- 1-3cm.