This boom arm can be used to position reflectors, flash heads, screams, tungsten lights and muslin backdrops. A chrome steel boom with 5/8” baby stud, telescopes from 3’8“- 7’8” [ 1.24M – 2.17M (48.8“ – 85.4”) ] and supports upto 11lbs (5KG) when fully extended. The heavy duty tilt locking device is designed to cooperate with standard grip head to provide a tightly lock ability and it allows the boom to slide within it to adjust the balance of your load. The hook end allows hanging a sandbag for added support.