It has thermal conductivity than aluminum. Heat exchanger can exudes heat faster by heat exchange through contact with air. This radiator is suitable for laptop and some narrow spaces, and through the professional air duct design, it increases the contact area with air for heat exchange, and it can dissipate heat more quickly. Please place the silicone cooling pad between the heat sink and the SSD to prevent damage to the SSD and protect the particles of the SSD, which can effectively extend the life of your SSD. Suitable for PC computer, laptops, and hard disk to dissipate to extend their life . Excellent performance and the cooling effect is more obvious. Easy and conveneint to install and remove. Suitable for M.2 2280 solid hard disk. and high quality Size:.70x21mm/2.76x0.83in Thickness:2mm Colour:As Shown Material:Pure Copper Package Contents: 2 x Heatsink(other accessories in the picture is not included) 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.