Package Includes 4 Pieces - Water cooling block 40mm Brand new Size(approx.):40 x 40 x 12mm(D x W x H) Pagoda faucet diameter 9mm Weight(approx.):35g Internal fin thickness(approx.): 0.5MM 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 Surface treatment: silver oxidation Applicable to 12706 Peltier computer CPU water, industrial inverter driver, head cooling, industrial control cabinet cooling. Color:Silver Material:aluminum