This monitor desk mount creates an ergonomic area for productivity and is designed to support up to 27-inch 16:9 or 30-inch 21:9 display and up to 19.8lb (9kg). The mechanical spring-assisted arm enables multiple adjustments to suit different ergonomic needs. The spring arm enables toolless height adjustment up to 10.6in (270mm) with effortless one-touch motion. Adjust the height of the arm along the 10.2in (261mm) pole. The arm can extend up to 22.2in (590mm) from the pole. The toolless slide and click design makes assembly quick and simple. The pre-assembled desk clamp and pole can be secured by hand to the desk, saving installation time. The articulating arm enables toolless adjustments of +/-180° horizontal swivel, 105° tilt, 240° pan, and 360° screen rotation on the VESA plate for portrait or landscape orientations. Durable die-cast aluminum construction. A cable management channel along the underside of the arm and a cable clip on the pole help to maintain an organized workspace. The mechanical spring passed a 10,000-cycle test and is backed for 10 years for long-lasting performance.