Micro Copper Heatsink Cooling Pad For Transistor Chip IC 3D printer For Raspberry Pi GPU 15x15mm 6MM high performanceOOTDTY  Features: pure copper 386.4W/m·K Is much higher than aluminum only 237 2W/m·K.brand new and high qualityEasy and convenient for us to install and removeFeatures：brand new and high qualityMade of high-quality copper material, durable, firm and stable for us to use.Supporting heat dissipation for various type of chip IC Raspberry pi 3D printerSpecification: Specifications:Material: copperSize:15x15mmthickness：2/3/4/5/6/8mmPackage Includes: 1PC x15x15mm Copper Heatsinknote: No retail package.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.