Description: 【High Quality Material】: The Keyboard Tray Clamp Mount is made of high quality steel, which is reliable in quality, strong in load bearing capacity, and durable.(Tray not included, desktop extension not included) 【Easy To Install】: Ergonomics Desk Expand Tray Clamp is easy to install, no bore required, no damage to the desktop. Just clip it to the edge of your table and screw it on. C clamp holds everything tightly in place and can be adjusted with just a tightening twist. 【Foldable】: Keyboard C Clamp, foldable for storage without taking up space. Stable and no shaking, low noise, no falling off, practical and professional, suitable for home or office use. 【Adjustable Range】: Foldable Keyboard Drawer Tray Clamp mount, the adjustable range is 0.5-7.5cm, suitable for tables of different thicknesses. 【Multifunctional】: Keyboard Tray bracket Under Desk, expand the desktop space, clean the desktop, and help you correct bad sitting posture. Let you work more easily and comfortably. Specification: Material: steel Size Chart: 19cmx8.4cm/7.48inchx3.31inch Package Includes: 2x Clamps 2x brackets 8x screws Note: Please allow slightly errors due to manual measurement and different monitors.