there aren't any downtubes/bowls with these, cuz i change them out with my store-bought bong. it has a diffuser-downtube, so i change it between bongs.

so here's some shit i made a while back:
GlassNBrass Reviewed by GlassNBrass on . Homemade Bong/Pipe/Bowl Gallery I am a noob at making homemade things so I was wondering if people could post some pics of homemade things to smoke out of. Rating: 5