Something completely new to the world of percolator bongs, the 'knob' is an intricate piece of glass work that includes circular pie shaped glass bulbs with crosses on them. A fantastic way to diffuse your smoke that displays an incredible bubble display when submerged in water. The bowl of this bong not only includes 2 handles, but a built in screen! So you can wave goodbye at having to purchase separate screens and gauze! As with many Black Leaf bongs, a splash guard and ice notches are located at the top and a heavy duty rounded and flared mouth piece awaits you! The popular beaker base shaped water chamber features on this model and the golden Black Leaf logo sits nicely on the top partition.