With a diffuser the smoke is softer and it also has a cooling effect. The holes at the underpart of the Roor diffuser plug, the diffusor, divides the smoke into many little bubbles, so they have a bigger surface. This Roor diffuser plug does not only connect your 14/5er bong with a 14/5er downtube, moreover it ensures you a better smoke experience.
Length from the core's upper edge: ca. 15cm
Tube diameter: ca. 10mm
Diffuser holes: Drilled and melded
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