Aluminum Liquid Water Cooler Heat Sink Radiator System Water Cooling Block for PC Computer Endothermic Head 40mmFeatures: 100% brand new and high qualityInternal extrusion flow forming channel.Brazing parts into a whole.Made of high quality material, durable, firm and stable so that we can use it.Applicable to computer CPU water, industrial inverter controller, laser head cooling, industrial control cabinet cooling.Surface treatment: Blue oxidation. Processing: vacuum aluminum brazing.Specification: Item Type: 40mm Water Cooling BlockSize: approx. 40x40x12mm/1.57x1.57x0.47inProcessing: Aluminum Vacuum BrazingSurface treatment: Blue OxidationPackage Includes: 1PC x 40mm Water Cooling Blocknote: No retail package.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!