Desktop Aluminium Heatsink Sheet CPU GPU RAM Copper Cooling - 0.3mm

This20pcs copper heatsink sheet are15 * 15 * 0.3mm. It is compatible for desktop CPU GPU graphics card.Features:It is made of copperThe product has high thermal conductivityIt is resistant to high temperaturesIt is compatible for desktop GPU CPU graphics card and RAMIt is ultra-thin copper cooling sheetSpecifications:Package Weight: 12g / 0.42ozItem Size: 15 * 15 * 0.3mm / 0.59 * 0.59 * 0.01in ?L * W * H?Package List:20 * Copper heatsink SheetNote:Copper is exposed to the air and the copper surface inevitably oxidizes and darkens. But this does not affect its cooling effect If you are worried you can scrub the copper surface with fine sandpaper or toothpaste.