Artiss Monitor Arm Gas Spring Desk Mount Screen HolderArtiss Monitor Arm Gas Spring Desk Mount Screen Holder Fully Adjustable Single Monitor Arm Stand Black With it, you can extend it up to 51cm to set your preferred viewing position and retract it with ease. Height adjustments of up to 39. 5cm can be easily done using the height adjustment knob. It also allows you to swivel your monitors 360and set in either landscape or portrait format. Using the VESA mount, you can mount any monitor size of up to