The fully adjustable Fellowes Office Suites Keyboard Tray saves space and offers good support while you work, To adjust height and tilt, loosen single knob to reposition keyboard manager, hold in place, then retighten knob to lock in position. Keyboard tray swivels to the left or right and swings back underneath work surface for convenient storage. Sliding arm lets you pull keyboard tray closer to you for ease of use. Mouse tray mounts to right or left side of keyboard tray. Both keyboard tray and mouse tray include soothing gel wrist supports for added comfort. Constructed of solid 2mm thick steel for lasting performance. Cord management feature prevents tangled cords.