Height Adjustable Aluminum Desktop Rack Monitor Stand + Laptop Stand, Technical Parameters, Material: Aluminum alloy + ABS Suggested Screen Size: 10″-32″ Suggested Laptop size: 10″-17″ Loading Capacity: 0-8kgs for each arm VESA: 75*75/100*100mm Tube Height: 315mm (12.4″) Head Tilt: +90°/-55° Head Swivel: +90°/-90° Head Rotation: 360° Arm Swivel: 180° Base Swivel: ±360° Color: Siver Grey / Black Installation: desktop clamping/ Grommet Mount clamp installatoion: desk thickness <=87mm grommet installation: hole diameter >=70mm