The SHAPE 4-Axis Push-Button Arm with 3/8"-16 is 6.5" in length and features a 1/4"-20 screw on a padded platform on top and a 3/8"-16 screw on the bottom. It's designed to support a monitor or other accessory on your camera rig and to provide efficient push-button angle adjustment. Four separate push buttons allow you to perform quick tilt and 360° rotation adjustments on the top and bottom of the arm. The push-button adjustment is achieved via built-in rosettes.