Reverse Calabash Featuring a rather unique design, the Brebbia Reverse Calabash is the same idea as a traditional calabash, There is a larger second chamber that allows the smoke to cool before entering your mouth. The "reverse" part comes in because the smoke cools inside the shank rather than beneath the bowl. The entire shank has been drilled out to 20mm wide and 40mm deep so is a fairly hefty chamber for such a small pipe. Finished in a jet black stain then sandblasted and fitted with a black acrylic stem.