DESK MOUNT MONITOR ARM: Triple monitor VESA mount (75x75/100x100mm) supports up to 15.4lb (7kg) 27-inch displays; Dual articulating and height adjustable steel arms w/central fixed monitor mount; C-clamp/grommet mounting QUICK INSTALLATION: Unique top-screw desk clamp for hassle-free installation without the need to go under the desk; Interchangeable C-clamp/grommet mount for desks up to 2' (50mm) thick; Includes tools for arm tension adjustment; Quick release VESA plates RANGE OF MOTION: Ergonomic three-monitor mount features articulating mechanical spring arms with toolless adjustments of +/-180° horizontal swivel, +/-90° tilt, and +/-90° screen rotation for portrait and landscape orientations ONE-TOUCH ADJUSTMENT: Mechanical spring-assisted arms w/height range of 10inches (255mm) & max arm extension of up to 28.4inches (722mm) from the pole; Designed for adjustable arm height along the pole