A keyboard tray system is one of the most frequently overlooked components of an ergonomic workstation. For people who spend more than two hours per day working on a computer, an articulating keyboard arm can help orient your keyboard in the most comfortable possible position, guarding against a variety of musculoskeletal disorders, including Carpal Tunnel Syndrome, neck and shoulder pain, and upper and lower back pain. We strongly believe that a keyboard tray is the cornerstone of a good ergonomic workstation. Features: Legato Arm Mechanism lift n' lock "leverless" height adjustment / 8.88" height adjustment range of 2.38" above and 6.5" below worksurface / innovative dial tilt makes angle adjustment quick and easy - angle adjustment +100 to -200 / tilt and height indicator displays present keyboard position / cable management system / low profile arm mechanism and tray head give the arm a sleek, thin design and maximizes knee clearance / 21" smooth glide storage track / 3600 swivel mount / 27" platform / mouse and keyboard on the same level / removable 26" GelFoam palm/wrist support