This handheld Grace Glass Double Chamber Bubbler is a wonderful accessory for the on-the-go smoker. With just enough space for your favorite legal smoking blend, this lovely glass piece offers filtration, cooling, and clean draws. The double chambers can both be filled with water with each chamber featuring different percolators for some of the best handheld filtration you can get. This glass piece has a 14mm Female joint that will fit 14mm Male accessories and replacements.