BL Nautilus Deluxe Bong with Inline Slit DiffuserOur tried and tested, and ever popular all time classic the Black Leaf 'Nautilus' bong is finally back again! Here it is the deluxe version. The special thing about this great bong made of the best borosilicate glass, blown from 5mm thick tubing, is the long inlineslit diffuser. Torpedo like with its many slits, it makes the bong water bubble strongly while the countless air and water vortices cool the smoke. You can cool down even more by filling the