Designed from the start to bring more to the table than other hookahs Retrofit Hookahs are in a class of their own. With a built in adjustment knob in the sent of the hookahs hub you can adjust the draw any time you like from tight, to wide open, or anything in-between. Retrofit Hookahs are constructed from ultra Premium 304 Stainless Steel and are expertly milled to provide you with a hookah that has both form and function this is miles ahead of the competition.