En4cer Vapor Bubbler with Mini Tube Mouthpiece Collaboration by Andy G and 4.0In this amazing vapor bubbler, Eric Ross and Andy G combine an old school dichroic mini tube with 4. 0's one of a kind En4cer design. The mini tube mouthpiece features three dichroic horns, a removable slide, and very elegant reversal work. The slide is removable but has no hole. The En4cer percolator features a 4. 0 millie on the top and complimenting reversal work throughout. The hollow foot design features a matching dichroic horned dome as well.