Pack of 30 Heatsink Copper Shim Thermal Pads 15mmx15mm for Laptop GPU CPU VGA Material: Copper Size: Approx. 15 x 15 x 1mm (L*W*T) The copper has high purity coefficient of thermal conductivity as high as 407 w/ (mK) With this copper pad to greatly lower GPU temperatures, can be used for graphics, northbridge, CPU chips. It can be applied to HP, Dell, Acer, Thinkpad and all laptop and computer heatsink solution!