'Black Leaf' Erlenmeyer 6-Arm Perko

What distinguishes the Black Leaf Erlenmeyer from other - at least optically comparable - Percolatorbongs? Inside there is not only a normal perc, but a whole diffuser chamber, which basically swirls the smoke after pulling. Even before the diffusor chillum, the highly effective 6-arm mushroom perc and the additional domeperc above, the chamber is the basic element of this bong, which is a prime example of smoke reduction. And finally, the whole thing also looks like ...

P.S With 7mm wall thickness this bong is also very stable and forgives the one or other blow.