Bong DownpipesIncluded in our wide range of useful and handy products sold here at HerbTools are our selections of downpipes (also known as downstems). These are the part of the bong that you need for the smoke to flow down into the bongs chamber to be cooled by the water. Our diffuser downpipes cover all sizes, 14.5mm, 18.8mm and 29.2mm. You may also be interested in buying a fancy new bowl.
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