Monitor StandsMaterial: aluminum alloy+ABS+silica gelRecommended screen size: 17-32 inchesRecommended laptop size: 12-17 inchesLoad capacity: 2-8kg per headWall-mounted: 75*75/100*100mmTube height: 315mmMonitor head tilt: +90/-55Monitor head rotation: +180/-180Monitor head rotation: 360Laptop head tilt: 45Arm rotation: 360Base rotation: 360Color: silver gray/blackInstallation: Desktop clamp and grommet installationDesktop clamping: Desktop thickness: 20-70mmGrommet installation: hole diameter>=70mm