3 HEIGHTS ADJUSTMENT: Raise computer monitor, notebook or any device by 10.5cm, 12.5cm or 14.5cm off the desk to create a comfortable viewing position and a healthier sitting position which help reduce stress on the neck and back. Simply press the button on the leg and lift/lower the platform to adjust between the different height levels. SIMPLE ASSEMBLY: Our laptop and monitor stand comes with 1 platform and 4 legs, all you need to do is just screw the 4 legs into the platform. No tools required. One minute is enough. | EONLION 3 Height Adjustable Metal Monitor Laptop Stand in Black