The medium Flex arm from SHAPE is perfect to strongly mount your monitor, small lights, or sound gear at any angle. Featuring ¼-20 to 3/8-16 adaptors captive thumb wheels screw with removable Arri standard anti-rotating pins. Each ball head can be released to accommodate your rig configuration. The balls on both ends are encircled by rubber rings that create the friction that holds the arm’s position and support up to 8 pounds when tightened. The locking rachet lever, in the center, provides a secure grip to tighten or loosen both ball heads. Additionally, the arm is also compatible with many third party 25 mm ball mount systems.