With the Humanscale M/Flex Monitor Arm, Three Monitor Solution you'll have all of your monitors at much more productive viewing heights in no time, while keeping the freedom to expand to up to six monitors if you need to add more in the future. Each arm holds screens up to 20 pounds. It's configurable ergonomics for monitors made surprisingly simple. Features highly modular design allows for easy monitor expansion without sacrificing stability. Arms allow for custom configurations using Humanscale's M2 and M8 monitor arm technology. Stackable post supports up to 6 displays. Compact design lets you maximize usable desk space. Available in modern polished aluminum with white trim, silver with gray trim, and black. Clamp, bolt-through, c:scape, slatwall, hardwall, and combination clamp/bolt-through bases available.