This 18 inches height is a simple color accented classic style beauty bong. by Genie Glass. Producing 9 mm thickness tubing is very costly to produce but it is well worth due to its gorgeous looks. It comes with an 14/18 mm slitted diffuser downstem and a 14 mm thick bowl. From there smoke is diffused and cooled in the main chamber. A long 9 mm thick tube keeps water from bubbling up towards the thick, comfortable mouthpiece, and ice notches will hold a few cubes for an even cooler smoke. This water pipe is made of quality borosilicate glass.