T-shaped control lever controls two actions in one: locking & unlocking the ball and panning base.
T-Lever is springloaded; pull it out and re-position it in any one of 6 positions.
Most tripods have a mounting platform with a 3/8" threaded stud. However, some tripods have a smaller 1/4" threaded stud (if your camera can thread onto the stud on your tripod, then it is only 1/4"). In order to mount our ballhead, you will need to order an adapter called a bushing. For a more secure installation, we recommend installing the bushing with non-permanent threadlocker fluid.