>>2839093
nta
they're a line of pipes that have a cooling chamber
savinelli also has their own system too, as do some others, like falcon, fe'ro, chacom, etc

honestly, if you're just looking for a grab & go smoker, get a Missouri Meerschaum cob
i'd argue that most of their cobs are -almost- reverse calabashes, from how large their air passage tend to be