1. The Weathervane Roof Mount is made of steel material, which is rust-, unbreakable, and can be used in all weather. 3. The Weathervane Roof Mount is easy to install with just the screws included in the kit, no U-bracket set and wall mount are required. 2. Each corner of the Weathervane Roof Mount base plate has 4 pre-drilled holes to securely hold the vane in strong winds. 4. The Weathervane Roof Mount is suitable for outdoor use, suitable for various antennas, can be mounted on a building wall or roof, use it as a flag pole mount, weathervane mount, urgent sprinkler mount on the roof, and use it as a stand during the holidays some decorations., Manufacturer: Akfldms