Fellowes Standard Keyboard Tray (Graphite/Black) features single knob that adjusts height and tilt for customized comfort. Simply grasp and rotate keyboard tray to find your preferred work position. A single knob adjusts height and tilt for individual comfort. Durable wood fiber construction provides lasting performance. Keyboard manager features a soothing gel wrist rest on both keyboard tray and mouse tray. Mouse tray mounts to either right or left side. Slide mouse tray under keyboard tray for easy storage when not in use. Offers a 30 degree tilt range of positive 15 degrees to negative 15 degrees, 360 degree swivel, 17-5/16" track and unlimited positions within height range.