Description: and high quality. Feature: Graphene is the most efficient heat conductor in the world,Its thermal conductivity can reach 5300W/m·K, pure copper only 386.4W/m·K and aluminum only 237 2W/m·K. You can use the temperature software to test the temperature before and after installation, you will find that it is more efficient than other radiators. When the computer temperature drops, the computer will crash less and run more smoothly and more durable. Two types: chute and grid pattern design, increase the heating cooling area. The bottom polishing technology is seamless and will leave no space. It is suiatble for PC computer, laptops, notebooks and hard disk to dissipate to extend their life time. Comes with the silicone thermal pad and rubber band, has an excellent performance and the cooling effect is more obvious. Easy and conveneint to install and remove. Item Type: Heatsink Size: 70x20mm/2.7x0.7inch Thickness: 2mm/0.07inch Color: Black Type: Chute Pattern colour: black Material: copper Size: 70x20x2mm Package Contents: 2 x Heatsink 2 x Thermal Pad 6 x Rubber Ban