Lizusidtsy 40x40x12mm Aluminum Water Liquid Cooler Block Heatsink For Computer CPU Radiator Internal flow channel extrusion forming Leak rate of less than 5X10-6 mbar.l/s parts Brazing parts into a whole Processing: vacuum aluminum brazing treatment: silver oxidation Applicable to computer CPU water, industrial inverter driver, head cooling, industrial control cabinet cooling. Color:Silver Material:aluminum Package Included:1 x CPU Water cooling Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.