Grav Labs 8' Beaker Water Pipe w/ Fixed Downstem When it's time to conduct your ultra important experiments in greenery, only the 8" GRAV� Beaker will do. The beautiful clear glass with black accents allows you to see all the inner workings of your lab project. This water pipe includes a fixed fission downstem that diffuses smoke through water, and prevents the damage potential of removable downstems. That diffusion will also give you ultra smooth hits in a compact piece. Another well calculated detail is the geometric pressed pinch, which doubles as a splash guard and an ice catcher. The Beaker comes ready to use with a 14mm GRAV� Cup Bowl included. For best results we recommend using this water pipe with 1.5" of water and a spirit of scientific curiosity.