Yes indeed this isn't the only accessory to be use to mount it.
Thanks a lot for the clarification. Would the 2 1/2 diameter be enough to mount this taking in consideration the inside ring?
2 1/2 inches is the absolute maximum at which you can close the ring, but the diameter of the pole must be smaller. Including the included SXT mount, the given space is pretty small actually. I suggest getting a couple of plastic cable ties if you have a large pole:
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