The E-IMAGE newly Aluminum compact Boom Arm EI-B83 has two section boom collapses down to 41", extends to 76", and weighs only 3.8lb. It is included sandbag that you can fill with the weighted material of your choice, allowing it to support a light or other gear weighing up to 5 lb at full extension. The included removable both 1/4"-20 and 3/8"-16 male threads, for multiple mounting options. And the industry standard receiver makes the boom compatible with a wide variety of light stands, it is ideal not only for studio photography but also for outdoor types of photography.
A counterweight ring for the provided 5 lb capacity sandbag, allowing the boom to support 5 lb at maximum extension.
Clamp Connector : Connects reflector holder to the light stand; Allow positioning at almost any angle.
Sturdy and durable locking knob,you could adjust the length that you need.
Both 1/4"-20 and 3/8"-16 male threads, for multiple mounting options.