[High quality]Made of and - Steel plate, this pole mount bracket can withstand the weight of most surveillance cameras. [Easy Installation]Suitable for indoor, outdoor, top, wall and ceiling mounting. Adjustable mounting angle is very convenient. High quality material also ensures and stable performance. [The Adjustable Loop Diameter]Adjustable ring diameter: The two rings of the wall-mounted vertical bar mounting bracket can be adjusted up to 200mm in diameter, loosen the screws and adjust the size you want, locking securely with the included screws. Used as an adapter to allow the user to mount any size vertical bar., Manufacturer: Jkjlorey