Specification Brand : Diyeeni BulletPoint1 : 【6 Kinds of Thickness】Provide 6 kinds of thickness (0.3/0.5/0.8/1.0/1.2/1.5MM) for you to choose. BulletPoint2 : 【High Thermal Conductivity】Thermal conductivity is up to 401 w/mk, very nearly silver's thermal conductivity 409 w/mk, much higher than ordinary copper pad (20-30w/mk). BulletPoint3 : 【Cooling Thermal Pad】Can solve laptop frequent crashes and other problems caused by thermal conductivity. BulletPoint4 : 【Application】Can be applied to the desktop computer north and south bridge connection, graphics card thermal conduction. BulletPoint5 : 【Good Cooling Effect】Exposed to the air, the copper will inevitably oxidize and turn dark, but the cooling effect does not be affected. If you still worry about it, you can polish the of this copper shim by fine sandpaper or toothpaste. Color : 1.5mm CompatibleDevices : Refrigerator CoolingMethod1 : Water CoolingMethod2 : Air ExternallyAssignedProductIdentifier : 4610256257941 ExternallyAssignedProductIdentifier1 : 746771161020 ExternallyAssignedProductIdentifier2 : 0746771161020 ItemName : Copper Shim 10 Pcs Efficient Fast Heat Dissipation Shim Piece Heat Sink Thermal Pad Suitable for GPU CPU Laptop,6 Kinds of Thickness Optional(1.5mm) ItemPackageDimensions_Height : 5.7912 centimeters ItemPackageDimensions_Length : 1.1938 centimeters ItemPackageDimensions_Width : 5.207 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : desktop-computer-heatsinks Manufacturer : Diyeeni Material : Copper MaximumRotationalSpeed : 28000 rpm ModelNumber : Diyeenitum0oipg3x-06 NumberOfItems : 1 PartNumber : Diyeenitum0oipg3x-06 ProductDescription : Features: 1. Provide 6 kinds of thickness (0.3/0.5/0.8/1.0/1.2/1.5MM) for you to choose. 2. Thermal conductivity is up to 401 w/mk, very nearly silver's thermal conductivity 409 w/mk, much higher than ordinary copper pad (2030w/mk) 3. Exposed to the air, the copper will inevitably oxidize and turn dark, but the cooling effect does not be affected. If you still worry about it, you can polish the of this copper shim by fine sandpaper or toothpaste. 4. Can solve laptop frequent crashes and other problems caused by thermal conductivity. 5. Can be applied to the desktop computer north and south bridge connection, graphics card thermal conduction.