Fit any size desk space with adjustable platforms. Use all 3 platforms for a large mousing area or remove 1 platform to fit just your keyboard. Low profile articulating arm simply adjusts 6" in height, +/-15º tilt and rotates 360º to match your SmartFit. - Unique modular platforms attach to arm as needed for different size keyboarding surfaces. - Use all three platforms for a large mousing area or remove a platform to fit small desks. - Adjusts 6" in height, +/- 15 degrees in tilt and rotates 360 degrees. - Includes a keyboard wrist rest. - 19" track, 11" arm for straight workstations. - Easy color-coded window lets you adjust the unit instantly to your unique SmartFit comfort color.