With the ability to rotate 360 degrees and tilt from 45 to 90 degrees, our monitor arms move effortlessly. Extremely stable, they attach to your desk without damaging the surface. Innovative counterbalance technology allows you to switch your monitor from landscape to portrait mode in a snap. They will efficiently move with you as you navigate your workday. - VESA 75mm or VESA 100mm compatible- Accommodates monitors of 30" or less