hanging desk organizer is extremely easy to install and use, you don't need to drill holes in your desktop, no glue, just turn the two clips. And you don't have to worry about damaging your table. The cooling holes in the desk side storage hanging prevent heat from building up on your device, ensuring that your laptop stays cool during use. no drill under desk organizer also comes with a pen holder and magnetic cable management that can be added to the side of your desk to easily organize laptops, tablets, concealed cables, documents, and other items, leaving the clutter-free. This is a great organizing tool to help work more efficient! On the inside of this no drill desk side storage, there are anti-slip tabs on the bottom and ends of the clips to help secure your laptop to the desk side storage organizer, the anti-scratch tabs protect your laptop,tablet and other electronic devices without worrying about scratches. Our clamp on desk organizer is made of high quality steel and the matching magnetic pen holder is made of high quality ABS,which is strong and sturdy with capacity of holding maximum 22lbs. no drill under desk laptop holder can be attached to magnetic cable holders, USB hubs, and other devices. Colour:A: Black Material: Metal Package Contents: 1 set x table organizer for desk Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.