Are you a tree perc fan yet? You will be after trying this incredible tree perc gridded stemline beaker bong! This Boo Glass bong gives us the best of a traditional tree perc bong with some extra features too: a gridded stemline percolator seals the deal with this water pipe. This gridded perc, which you can see in the bong's interior, helps to smooth out the smoke in your bong, giving you a fresh, crisp hit with every inhale, due to the multiple chambers and holes through which smoke passes. Of course, we can't forget the tree perc as well that always gives great flavor and a smooth hit. We also love the scientific glass construction, meaning it's made of durable borosilicate glass with a thick, heavy base to prevent tipping and breaking. This 14mm 90 degree female pipe will pair perfectly with any matching male accessories; however, we think you'll be plenty occupied with the tree perc and gridded stemline for the time being.