Features: Graphene is the most efficient heat conductor in the world,Its thermal conductivity can reach 5300W/m.K Copper thermal pad conductivity only 386.4W/m.K and aluminum only 237 2W/m.K. Easy and convenient for us to install and remove. Made of high-quality material, durable, firm and stable for us to use. Supporting heat dissipation for various type of for M.2 NGFF 2280 PCI-E NVME SSD solid state hard disk. Specifications: Item Type: Heatsink Material:Pure Copper + Graphene coating Color: Black Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-3mm measuring deviation due to manual measurement. Package includes: 2pcs x Thermal Pads