Sit-Stand Wall Mount Monitor Arm Adjustable Hydraulic Arm by Home Concept - Support your two monitors at the correct height for ergonomic comfort (Extended, Dual Screen, Black) EASY LIFT WITH JUST A TOUCH: Smooth Operation provided from premium hydraulic arm with durable gas spring inside means you don't have to pick up your monitor to adjust it. Let the hydraulics do all the work and switch from sitting to standing in an instant. NO MORE PAIN: Support two monitors with our arms engineered for the best ergonomics to increase viewing comfort and reduce eye, back and neck strain. SLEEK SILICON AGE DESIGN: Completment your flat screen monitor and free up desktop space. Cord management system hides cables, which means more usable workspace and a cleaner desk STURDY AND STRONG: Fully support monitor sizes from 15"-27" and weights from 6.4-17 lbs. Includes 75mm and 100mm vesa mounting patterns. Features tension adjustment screw for Goldilocks-like precision. OMNIDIRECTIONAL FLEXIBILITY: Position your screens exactly where you need them. Mount Tilt (up/down/left/right): 180 Degrees / Mount Swivel (around mount): 180 Degrees / Mount Rotation (portrait or landscape): 180 Degrees / Mount Lift: 14"