Best Brella’s Rotating Arm
The arm will rotate 360˚, allowing you to place your umbrella at any angle. The stud on the rotating arm fits into the big-jaw clamp. Once the big-jaw clamp is attached to a surface, all positioning of the umbrella is controlled by the knob (with the temporary red dot) on the rotating arm. Note that you cannot “strip” or “over tighten” this knob. It is more convenient to leave the rotating arm permanently attached to the clamp .