my friend and i took this fake fish aquarium he had, about 1 1/2 feet long and 2 cm in diameter. we took the powerdrill he has and drilled a hole, then we went to home depot and bought this hollow steel cylinder that we use for the female piece. we use a trumpet mouthpiece as the slide. this thing looks, acts, and is just as effective as any 1 1/2 foot bong youll find on the market, plus the diameter is a lot bigger than any bong youll find in stores the grand total came to $3.63 for the female piece.

ill try to get a picture of it, its at his house