The Vapo-bowl can be attached to all kinds of pipes,acrylic and glass bongs, turning them into effective vaporizers. You can easily change the temperature inside the bowl by adjusting the screen position.
The metal Vapo-bowl has a standard thread, so it can be attached to almost all pipes and acrylic bongs.
The glass Vapo-bowl works the same as the metal one. This glass version fits on almost all glass bongs. Diameter of the glass fitting is 18 mm.