The main function of the item: A.Raise the laptop by 25-80 degrees to effectively enhance the cooling effect. B.Raise the height of the desktop keyboard to effectively relieve the fatigue of the wrist. Easy to carry and elegant:Small and light,can be opened and closed by folding,integrated with the notebook,harmonious and elegant. Scope of application:laptops, desktop wireless keyboards, tablets, routers, set-top boxes, etc. Equipped with a silicone anti-slip pad, it has excellent anti-slip performance even on glass or marble surfaces. Easy installation:You can install it by hand without using any tools Hign-concerned Chemical:None Application:Laptop Colour:Silver Material:Zinc Alloy Package Contents: 2 x brackets 2 x spare stickers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.