Showerhead Glass BubblerThis beautiful bubbler starts with the 18. 8mm glass bowl that fits onto the removable reducing downstem showerhead perc. This beautiful showerhead perc contains 16 holes for ultimate smoke diffusion. The clear section in the middle contains a Sheldon Black signature and the piece fits onto the large 29. 2mm joint connecting onto the main section. The main section has a large Sheldon Black signature adorned down the middle. Once smoke passes through