The glass stem with the inbuilt glass cone pieces are very advantageous because you will have less chance to break it.
It also offers a good price quality ratio and generally have a very pure design that allows its to suit with all style of bongs.
Made of Pyrex glass.
Measures 7cm in length.
Comes with inbuilt cone piece.
Joint - 9mm in5 diameter, suitable for standard grommet.