The Grav Labs Gravitron is the world's first affordable gravity smoking system. You won't make a grav bong like this in your college dorm room with random parts.
Available in your choice of 11" and 14" height.
The Grav Labs Gravitron consistently produces very potent hits. This is caused by the water drawing smoke into the bottle at a rapid pace. The water is not filtering or cooling the smoke in any way. To break things down a little further, it is essential to understand the whole process of using a gravity bong.
First, place the bottle into the empty glass cylinder. Once the bottle is in place, fill the cylinder with water until it is about 2 inches from the edge. Next, insert the dry herb bowl into the mouthpiece. Then, simultaneously as you light the dry herbs, slowly lift the glass bottle. This will draw the smoke into the bottle. Once the smoke has completely filled the bottle, remove the bowl. Keep your hand steady once the bowl is removed, because any downward movement will force the smoke out. Place your mouth on the mouthpiece, and slowly push the bottle downward while inhaling. If you're new to gravity bongs, start out with a smaller amount of dry herbs and work your way up.
No smoke is wasted when using the Gravitron correctly. Made from thick and durable scientific glass, you will not have to worry about your clumsy friends dropping it. In case any of the parts on your Grav Labs Gravitron break or malfunction, there are many replacement pieces available. Label color may vary.