Simply place the Black Leaf diffuser plug on a 14/5er bong and put a 14/5er downtube on top and you can enjoy soft and cool smoke. That is achieved by the little holes, they divide the smoke in many little bubbles and give it a bigger surface.
Length from the core's upper edge: ca. 18cm
Tube diameter: ca. 10mm
Diffuser holes: Drilled and melted
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