Enhance comfort and posture by reducing stress on the shoulder/arm/wrist while using a laptop/desktop; Ergonomic design supports swivel motion for typing/scrolling - 6 levels of height adjustment from -0.2in (-5mm) to 2.7in (70mm); Full 360-deg of motion - Solid die-cast aluminum; smooth foam padding on arm pad - Ships fully assembled/ready to install; Tool-less clamp-on installation with no drilling required/no damage to desk; Fits desk thicknesses up to 2in (52mm) - 2-year warranty.