Pure Copper Water Cooling Block for Computer 40x40mm Water-Cooled Exchanger Endothermic Head for Liquid Water Cooler Heat Sink System for CPU Graphics Radiator Heatsink (1 Pack)

√Processing: Pure copper, √Internal flow channel extrusion forming,brazing parts into a whole, √Internal fin thickness 0.5MM，Leak rate of less than 5X10-6 mbar.l/s parts, √Surface treatment: double side processing were smooth, √Applicable to computer CPU water, industrial inverter driver, laser head cooling, industrial control cabinet cooling