So I made these last night when I got bored They're tree Percs that screw onto each other and are air sealed when they're together So you can have a 1 perc bong or a 40 perc bong whatever your in the mood for I plan on making more peaces like ice catchers, milking chambers, and of corse the base piece with the down stem I just took the cap off the bottle, cut a hole in the bottom and hot glued the cap there, and added the straws for the perc More pics soon, give me some feedback!