Transformer Tubes are a family of interchangeable pieces that can be assembled to create a variety of unique combinations of water pipe bongs, dab rigs, and hookahs. These tubes take the customization of Legos and implement this concept into bongs. Each module features a male and female thread allowing you to easily customize and adapt with any of the 60+ modules available. Made from extremely durable BPA-free Polycarbonate plastic, the Transformer tubes even use a glass bowl and downstem so you are still smoking right out of the glass. Using Polycarbonate for parts of the water pipe drastically reduces your chance of accidents. The quality material that Transformer Tubes uses offers a clean and durable smoke even when dabbing!