Sturdy and Stable Structure Made of aluminum alloy material, durable and sturdy, not easy to rust, and adopts triangle structure to increase the stability of the wall mount boom arm, safe and reliable to use. Adjustable Length Featuring 2 sections of telescoping tubes with 35mm/30mm diameter, the length of the wall mount arm can be extended from 72cm-130cm/28.3in-51.2in according to your different usage requirements, very convenient to use. Flexible to Use You can swing the wall mount arm swivel up and down, or left to right from 0 to 180 for various angle adjustments, and you can fold it flat against the wall to save space when not in use. Easy to Install Comes with 4pcs expansion screws, you can easily install the boom arm to a solid wall. With sturdy and large base, firm and secure.(Note: The wall mount boom arm need to be fixed on the load-bearing wall.) Specifications: Length: 72cm-130cm/ 102cm-180cm(optional) Material: Aluminum Alloy Load Capacity: 5kg Connection Screw: 1/4 inch 3/8 inch Item Weight: 2420g/ 5.3lbs(72cm-130cm), 2780g/ 6.1lbs(102cm-180cm) Packing List: 1 * Boom Arm