MECCANIXITY Heatsink Copper Sheet Shim, 0.3mm Thickness 20 x 20mm Pads with Thermal Conductive Adhesive Tapes for Desktop Computer GPU CPU Cooling Patch 5 Set - mea231220ee000001

• Copper gasket is made of copper and paired with thermal conductive glue backing, which is widely used in various places,very suitable for cooling chips,notebook,north and south bridge,memory modules and other small electronic devices without cooling function. Package content: 5 Sets Copper Sheet with thermal conductive tapes.Dimension: 20mm x 20mm/0.79inch x 0.79inch(L*W).Thickness: 0.3mm/0.01inch.Material: Copper with thermal conductive adhesive. These copper thermal pads use good quality copper material,they can withstand high temperatures of 160 degrees,are durable radiators,transfers the heat of the IC,graphic cards or other machine to the copper sheets and extends the service life of the components. Just peel the sticky label on the back from the adhesive back and attach them to any hardware you need them to help cool, and there will be a cooling effect. When exposed to air, the surface of copper pads will darkens, but the cooling effect is not affected. If you are still worried about it, you can sand the surface of this copper gasket with fine sandpaper.