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.