When I was at the local shop I was looking at the hookah's, and I saw one of the bowls upside down, and I noticed that it was a screw-on bowl.
The stem had no grommet, but just the same "lines" in it.
Is this good or bad?
I have never seen this before, are there reason why the popular brands don't do that?
If it's as good as a normal bowl, I guess it is much safer, because your bowl can't be knocked over as easy as a normal bowl?