Punch free design, just clamp on tabletop and tighten, will not damage the desktop. 90 degree folding storage, not taking up much space, low noise, strong bearing and not off. One key to fold, comfortable to hold, easy to place, will not crack. Adjustable screw design, the clamp can mount on different thickness table. Simple in structure, easy to use, not easy to deform, you can use it with confidence. Designed for clamping keyboard tray, the desk extension plate support can be folded after use. Made of premium material for long time and use. It has a simple design, but very practical in use, giving you a good using experience. Also can be a good gift choice for your friends, they will like it. Thickness range:0.5-6.5cm Colour:Black Material:Metal Package Contents: 2 * Computer Desk Extender 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.