This is a propeller purge valve. When the smoke coming out, propeller is turning.

This is just an accessory to modify the hookah and enjoy smoking more.

It is easily be put on the hookah after taking out the regular purge valve upper metal.

It is suitable with the Oduman Models Below:

- N1, N2, N3, N4, N5-Z, N2 Travel, N5-Z Junior, Voyage, Tarantula, Smoke Tank, N4 Midi, Gusto-35, N2 Gold.

NOT SUITABLE WITH MONSTER AND MICRO

It has a metal inside, the thread dimension is M16x1, so it is suitable with a lot of hookah brand