Two fully independent adjustable monitor arms with innovative gas spring technology allows for effortless monitor adjustment. Intuitive cord management system helps minimize clutter. Two 3.0 USB ports located at the base of the product make it easy to connect to your favorite devices. Easy to mount – can be mounted via clamp on desks between 0.8" and 4.7" thick or grommet hole between 0.3" and 2.9". Each arm holds a monitor up to 20 lbs.