A newer glass company based in Riverside California. Most of their unique pieces feature their own perc called the Gritted Quad Jet. They follow up with either a gritted turbine or a fab egg and sometimes both! Right now all their rigs come with 14mm female joints for the best of both worlds. COL Glass uses only quality American or German glass. Brothers with Glass is proud to be the only online head shop offering COL glass! Quality tested and smoke shop approved!