The steel put in by means of the antenna pole is galvanized steel, which has anti -rust coating to prevent rust and corrosion for out of doors installation. This is awfully heavy.The rod installation bracket product of 0.2 -inch thick galvanized metal is powerful sufficient to carry heavy antennas.This antenna rod is simple to install, and uses a V JAW block with twin U -shaped bolts to make sure that the pole does not slide down.The rod installation seat can be utilized for fixed rods, with a diameter vary of 1.1 to 1.97 inches (30-50mm).It is widely used for external antennas racks, can be utilized for building roofs or walls, and is appropriate for antennas.Color: SilverMaterial: steelPackage Contents:1 x Antenna Pole Mount KitsOnly the above equipment content, different products are not included.Note: Light reflection and various displays can cause the colour of the object within the photo slightly various from the genuine thing. The measurement allowed error is +/- 1-3cm.