The Raymall antenna pole mount clamp is made of high-quality heavy steel. The surface is electroplated with zinc to prevent rust and corrosion, suitable for any type of weather, provides a long term usage The antenna mount adapter clamp works with starlink dish. Directly install the starlink antenna mast in the U-shaped mount and then fix it to the base pole through 2pcs M8 heavy U-bolts clamp. Makng it easier and more stable to attach various of outdoor home antennas to the mast. The antenna pipe clamp fits diameter 1.17”-1.39” pole of Antenna. The U-bolts clamp fits base pole of diameter 1.14”-2”.（Please confirm what the outer diameter of the two masts is before purchasing.） NOTE: The inner diameter of U-Shape Mount can be adjusted by screws. When using for the first time, please loosen the screws to make the starlink dish mast inserted in the U-Shape Mount and then tighten the screws to lock the starlink dish mast. Wide Range of Use: The antenna mast clamp not only can be used for fixing antenna, but also can be used for fixing any kind of Pipe/flagpole/Tube with appropriate diameter.