This narrow 'Black Leaf' Whirlwind' tube bong has a height of around 350mm. A special feature is that this ice bong has no down-pipe, because the large roll-stop bong bowl inserts directly into the flue, attached to the side of the main tube. The smoke first enters the main water-chamber via the 3-slit inline diffuser. Then the smoke is spun vigorously by the 5 turbine blades forcing impurities to be stuck to the inner wall of the bong. The 'Whirlwind' is also has a kickhole (carb), which injects a final blast of air just prior to inhaling. Complete with a large SG 19 'Roll-Stop' bowl.