The Fellowes Professional Series Premier Keyboard Tray ensures neutral hand/wrist position for optimal comfort and productivity. It also moves your keyboard and mouse off the desktop to save workspace. It designed to adjust effortlessly, a simple one-handed motion instantly repositions keyboard without the use of locks or levers. Use the single knob to adjust the tilt on the keyboard tray, while the mouse tray mounts on the left or right and swivels to preferred position. Keyboard mechanism offers total knee clearance plus a curved design to bring you closer to the desk. Soft Memory Foam wrist support ensures hours of comfortable typing.