Monitor StandsMade of aluminum alloy and cold rolled steel, very strongSuitable for LCD/monitor up to 27 inchesSuitable for laptops 10.1"-17"Laptop thickness: 5mm-21mmAdopt air pressure structure, easy to move up and down360 degree rotation, up/down tilt, rotationCable system with hidden cablesLoad-bearing: 2-9kg (please note that the weight of the monitor needs to be within this range, otherwise the gas spring will not work)Wall-mounted: 75/100MMLaptop tilts upward about 45 instead of 50Each piece includes two mounting methods: clamp mounting and grommet mountingClamp installation: Desktop thickness needs to be 10-90mmGrommet installation: hole diameter 10-60mm, desktop thickness 10-90mminclude:1x dual arm monitor stand1x laptop trayAssembly kit and instructions