Spring assisted height adjustment allows for effortless positioning of the keyboard platform using a single knob. The Lift and Lock articulating arms provide quick and easy height adjustment and offer a generous height range. For those who require precise adjustment there is the Lift amd Lock Dial-A-Tilt articulating arm. The Positive Tilt LockOut option encourages low-risk postures by preventing the user from placing the platform in a positive tilt position. For added adjustablility the Dual Swivel option adds a swivel plate between the platform and the arm.