Finally, the amount that connects to your desk from above. This single desk mount eliminates the need to have to crawl under your desk for installation. Install the base separately from above your desk and then attach the full motion arm. Includes both c-clamp and grommet installation components to fit a variety of desktops. The mechanical spring arm allows for smooth and easy height adjustments. Tilt and swivel functionality offers multiple monitor angles to improve your workspace comfort.