Adjustable Keyboard Tray offers unique sit-stand arm that raises platform up to 10 above the mounting surface and tilts +15 degrees/-15 degrees. Lever-free arm is easy to adjust. Adjustable keyboard platform with patented left/right sliding for optimal positioning. Highly adjustable mouse platform mounts left or right and easily adjusts up, down, forward and back. Gel wrist rests feature easy to clean leatherette cover with antimicrobial protection. 23" track length is ideal for corner workstations with less than a 12" radius or less than a 17" diagonal. Not compatible with shallow workstations."