Ive never seen that.Ive had a glass on glass bong but that was just a double chamber.Maybe if you are lighting the rubber than your stem is too short.I cant see how you could have glass where the grommit goes.How would it be airtight and how would you clean there? Maybe im just misunderstanding again.
jacquelyne Reviewed by jacquelyne on . Advantages of glass-on-glass? Does anyone out there have a bong that is glass-on-glass? I am trying to figure out what the deal is with that, cause my bong just uses a little rubber grommet. Why buy glass on glass? Why not? Rating: 5