Keyboard drawer features a gel wrist rest & retractable mouse station. Keyboard tray extends & locks into position while in use. Design also allows the drawer to retract for storage & conserve valuable work space by storing keyboard out of the way. Track length is 18". Designed for use with standard workstations, keyboard drawer offers smooth & quiet ball-bearing suspension rails as well as screws to the underside of the desk. Mousing surface can be used to the left or right of the keyboard. Keyboard drawer is not height-adjustable.