Sweet Short Bong! I say short because of its height ONLY, everything else is BIG! 5mm x 50mm, two bubble chambers and a 5 1/2" down stem (four slit and narrowed open end) in a 12" package! You get the best of both worlds, hitting and stacking simultaneously; and then you have to clear it! Very solid build, a touch of art, expert craftsmanship, high quality glass, functional and smooth! I added a Custom Creations (C2) Showerhead Ash Catcher 14mm/90°/14mm. Wicked looking setup that is very functional and smooth. Great diffusion and percolation from both the ZHS Double Bubble Beaker and C2 Showerhead Ash Catcher. This is my third ZHS piece and I truly enjoy each of them!