Maximize desk space and create a more efficient workspace simply by adding this under the desk sliding keyboard shelf to the mix. It has ample space for your keyboard and other office items if desired, as well as an attached mouse tray that mounts either on the left or right side of the keyboard tray. The pull out keyboard tray features a steel ball bearing track for a smooth and silent sliding action. Easily slide it out when in use and slide it back in when not in use to keep it hidden and out of the way. Install it at 3 different height levels to customize it to your height and positioning. This ergonomic setup allows you to keep your elbows bent at the optimal angle to reduce strain on your wrists and arms and to help prevent carpal tunnel.