Alphacool Eisflügel: The flow indicator with extra value! A water cooling system inside a computer is also there to make an impact on the overall appearance. Neatly laid hoses or HardTubes make for an impressive picture. With the Alphacool Eisflügel, you can add another real eye-catcher to your system. The fan's silent rotation will always show the direction of the flow. Model: 17356