Uses SmartFit® System – Measure, Adjust, Fit. Workspace that works for you. Set up your keyboard area with ergonomics in mind. Match the modular platform system to your SmartFit personal comfort color. You can then use all 3 platforms for a large mousing area or remove one platform if you have a smaller desk. Keyboard and mouse wrist rest is included. Low profile, 11" articulating arm sits under desk and is able to adjust 6" in height, +/-15° tilt and rotates 360°. Track is 19". For straight workstations.