The Alphacool Eiszapfen HardTube fittings are among the most popular HardTube water cooling fittings on the market. They are characterized by their high processing quality and the triple sealing system.High quality coatingAlphacool uses advanced chromating to apply the paint to the brass connection. This not only makes the paint more even; it is also much more durable and resistant to external influences. The small Alphacool logo is lasered in and not printed. Therefore, it cannot be removed by friction.Triple sealTightness is essential for a water loop. Alphacool uses three sealing O-rings for these Eiszapfen fittings which seal against the Tube. Two O-rings are integrated in the fitting, while the third O-ring serves as a seal and is attached together with the HardTube. The union nut compresses the O-ring ensuring a tight seal. This not only provides a triple lock, but also increases the tensile strength of the HardTube. This means that it requires considerable force to pull the HardTube out of a tightened fitting.AssemblyRemove the union nut together with the O-ring inside. The connection is then screwed to any component with G1/4\" thread. Insert deburred HardTube then put the O-ring and the union nut over them. The last step is to screw the union nut to the fitting.Technical data:- L x D: 22.2 x 22 mm- Thread length: 5 mm- Material: Brass- Connection thread: G1/4\".- Colour: BlackCompatible with all HardTubes with 14mm outer diameter.