Includes Shipping HNDS8 (BLACK) LCD Monitor Arm, Dual Screen, Compatible with 13-32 inch Monitors Weight Capacity: 2-9kg The base that attaches to the desk is wide, providing peace of mind. Compatible Desk Surface: Thickness 10mm-90mm, Depth 105mm or more, Width 100mm or more You can position the monitors at your preferred height and angle to match your eye level and posture. The gas spring mechanism allows for easy adjustment by hand without tools. Please refer to the images and understand the product before purchasing.