【TWO WAY TO USE】Without the boom arm, equipment can be simply installed on the light stand; While for more flexible use, please attach the boom arm onto the light stand and then you can extend the boom arm and adjust the angle by using the butterfly knob to achieve more user-friendly performance . And With 1/4" & 3/8" Screw for a variety of product needs. | 【ADJUSTABLE】Feel free to adjust the height of the light stand from 45 inch/115cm to 157 inch/400cm; The arm can be extended to 75 inch/190cm length; It can also be rotated to 180 degree which allows you to capture the image under different angle. | 【Air-Cushioned Heavy Duty Light Stand】With the air cushioned shock feature you will be able to protect your equipment or ''fingers'' from any harm in case you forget to tighten any of the sections of your light stand due that the light slowly descends due to the air cushioned feature. | 【WIDE COMPATIBILITY】Universal standard light boom stand is a great support for most of photographic equipment, such as softbox, umbrellas, strobe/flash light, and reflector. Perfect to use outdoor and indoor, giving you a great support to meet various photo or video shooting situations. | 【Come with a Sandbag】The sandbag attached allows you to easily control the counterweight and better stabilize your lighting setup.The balance of the weight is up to you,because you can change the weight of the sandbag to create angles of your photography.