Optimizes the space of any traditional or standing desk but freeing up the work surface. Arms swivel with clamp mount. Easily clamps to surfaces up to 1" thick. Adjust to 12-1/2" high. Tilt range of 45 degrees, pan range of 225. For single or dual monitors up to 15 lbs (23" W) each. Partially assembled for ease of installation out of the box. Black. 3-year limited warranty.