DIY Customized Design - Save desk space by transforming your very own keyboard tray into an under desk sliding tray with this keyboard tray clamp. Package includes 2 slider tracks.Height Adjustable for Ergonomic Typing - This keyboard tray clamp It allows you to easily slide your tray in and out from your desk and enjoy ergonomic typing angles that relieve stress on your wrists and shoulders. The tracks are made of solid steel for a stable setup that lasts! Rotatable Design - You can increase your desktop space by transforming your own boards with this under-this keyboard tray clamp! C-clamp can be rotated 45, for irregular desktop thickness within 4cm (please measure the size of the planks before purchase) for a variety of L-shaped corner tables.Easy Installation - It comes with all necessary hardware, and it is easy to mount your keyboard tray to the desk with keyboard tray clamp up to 40 LBS.