1. Overview – U-bolts are used to attach Aerial, satellites, masts/poles and other items to wall brackets and fixtures. The only problem with standard U-bolts is how they tighten, all of the force is concentrated to one side of the bo-lt potentially causing damage to your mast or bracket when over tightened or leading to the connection being unsafe if under tightened 2. Our heavy duty Jaw U-bolts deploy a strong metal jaw that provide an even amount of force all around the mast in use and bracket when tightened. This ensures that no damaged will be caused to your mast or bracket whilst increasing the strength of the connection 3. Mast Mounting U-bo-lt clamp kit, suitable to mount antennas to mast/ tube/ pipes/pole for outdoor applications 4. Designed to support most outdoor extenders, Glass Fiber LoRa Antenna，Helium Miner Hospot Antenna, Suitable for Various Antennas with an Outside Diameter of 1.8~2.28cm Color: As Shown, Weight: 0.7275254646 Pounds, Manufacturer: Zanthicia