The DUD bowl is a large phunnel bowl. Made of laboratory grade glass, it is heat resistant. The large dimensions will allow you to combine it with heat management systems such as Kaloud Lotus systems.
DUD bowls can be, of course, used on products of the brand (Fat Boy, Shooting Star, Pyramid, Volkan, etc...), but also on all glass tray hookah models such as Magic Glass, Lavoo, etc...