This is an easy sustem to clean the inside of a heavilly used pipe.
You place alcohol in the tube, and stuff some cotton inside the bowl.
Then you place the tube on a low fire( i use a candle, other people use alcohol lambs)
The alcohol inside the tube gets hot and steam starts flowing in the pipe.
Eventually the alcohol boils and liquid alcohol flows inside the pipe and cleans everything.
In about 2 minutes of use you have a perfecty clean pipe.
If you tried to do this the traditional way (alcohol and pipe cleaners) you would need about 2 hours and more than 60 pipe cleaners. Plus you would not get rid of the goasts this way.
It is a nice idea (not mine) that saves you time and effort. I suggest to use it in an old pipe you dont like too much for start, because it will take some time to learn in which angle should the pipe be, and how hot must the alcohol be.
Made off PYREX glass.
including shipping and handling costs