Originally Posted by
Branzig
It is a condenser. It is "supposed to" make for a cooler and drier smoke. The trade off is if moisture gathers at the bottom of your bowl you can't pass a pipe cleaner through it.
Some actually work very well, most are terrible gurgle breeding monsters. so unless it is a rare collector, like a 4 hole Kaywoodie, most of mine meet the hacksaw.
One of my local smoke shops carry them, but he is a true tobacconist, not a pay for less smoke store. So if you don't have a tobacconist near you, probably gonna have to get them online.