Reference Title: Primary Water Cooling Block 40 80 120 160mm for Liquid Water Cooler Heat Sink System Silver Use For PC LapCPU Description: Features: 100% brand new and high quality. Internal channel of extrusion flow forming. Brazing parts in a whole Processing: vacuum brazing Treatment surface: silver oxidation Applicable to computer CPU water, industrial driver inverter, laser head cooling, industrial cooling control cabinet. Specifications: Item Type: Water Cooling Block Material: Alloy Color: Blue Size: 1#/2#/3#/4#/5# (Optional) 1#: 40×40×12mm/1.57×1.57×0.47in 2#: 40×40×12mm/1.57×1.57×0.47in (Upper water outlet) 3#: 40×80×12mm/1.57×3.15×0.47in 4#: 40×120×12mm/1.57×4.72×0.47in