Nhowe R80c Matte Black Copper Heat Exchanger Radiator for CPU Pc Water Liquid Cool System 100% new, fine workmanship, simple sense is very strong! Two sides fixed screw hole plate for steel, copper as a soft, unable to hold the screw, so the guard plate USES is steel, other parts of copper Usage: suitable for PC and server of overclocking cooling, or other instrument of water-cooled cooling needs Free combination in water cooling kit cooling system Thanks and have a good day !