Gas Spring assisted arm helps easy adjustment for viewing comfort All cables can be neatly concealed inside the arm for an exceptionally clean look When not outstretched, the arms can fold close to the wall for space saving. The aluminum alloy and steel construction makes the arm sturdy ? Specifications: Weight Capacity: 3~9 kg (6.6~19.8 lbs) Tilt: 20° up and 35° down (display) & 20° up and 60° down (arm) Material: Aluminum alloy and plastic cover Mounting Option: Ceiling mount type Pivot: 270°, 370°, 270° (ceiling, arm, display) Extension: 1627mm Display Compatibility: VESA 75/100mm