Description: brand new 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. Four patterns: no printing, 4G printing, 8G printing, 16G printing for you to choose from to meet your needs. Easy and conveneint to install and remove. The ultra thin radiator is designed for the notebook and some small space heat dissipation. Heatsink only, other accessories demo in the picture is not included! Specifications: Item Type: Heatsink Material: Pure Copper, Graphene Size: 66x25x0.5mm/2.5x0.9x0.01in Color: Black Type: no printing, 4G printing, 8G printing, 16G printing(Optional) Quantity: 1 Pc Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Heatsink