Designed for clamping keyboard tray, the desk extension plate support can be folded after use. Made of iron material for long time and use. It has a simple design, but very practical in use, giving you a . Also can be a good present choice for your friends, they will like it. Features -Color:Black -Material:Iron -Size:19.50X4.20X3.50cm/7.66X1.65X1.38in -Note:Without board. - Punch free design, just clamp on tabletop and tighten, will not damage the desktop. - Not taking up much space, low noise, strong bearing and not coming off. - 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. Package list: 2 x brackets 2 x clips 2 x pads