Expansion with 2 Sections NEEWER tripod boom arm, length 35" to 61" (89 to 155cm). Attach the boom arm to the light stand and easily adjust 180 swivel to get the perfect angle for your shooting needs (NOTE: Light Stand is NOT Included) Ergonomical Design The top is designed to hold the light more securely. The long locking knob and foam handle at the bottom enable the photographer to adjust the overhead boom arm with great ease and lock it tight in position. Premium Material The extendable aluminum alloy boom has a maximum length of 61 and can be rotated up to 180 for adjustment. Separate tilt, pan and arm lock knobs. The boom also comes with a stainless steel 1/4" threaded screw for connecting other devices.