yeah there are two sizes of NON GonG downstem, regular (9mm bowl, 12mm downstem) and oversized (12mm bowl, and 15mm downstem). Pretty much, if its oversized youll know cause you can stick your pinky into it.

length wize, just measure your old one i guess.
dankus maximus Reviewed by dankus maximus on . question about bong so my dumbass friend broke my bowl for my bong and also the down piece how do i measure these for when he goes and buys me new ones thanks Rating: 5