Adjustable Keyboard Arm Mechanisms for every BODY and every BUDGET. Office Ergonomics is the ability to rapidly and easily adapt a workstation to the user. The newest design in adjustable arms. Intuitive free float design for height adjustability. New ergonomically designed "Dial Tilt" adjusts platform tilt from positive 10 degrees to negative 15 degrees with a simple turn of the knob. Convenient indicator shows the user exactly what degree of tilt they prefer. Low profile design for maximum knee clearance. Thin Glide track for smooth operation and storage. 6" Height adjustability. 360 Degree Swivel, 21" Thin Glide Track. 10 Degree Positive and 15 degree negative platform Tilt.