Hey guys The other day my bong Fell over and my bowl broke off in my downstem. I managed to get out the glass from my downstem and save it. I have no idea, what size the bowl was. me and a friend are trying to find out. we think we know the size but want to be sure! so, here is the bong's joint size. 18.8/14.5MM. Heres a link to the Bong i got (Blaze Glass - Premium Double Spiral Perc Cylinder Ice Bong - Clear - Grasscity.com).. I need to know what size the bowl should be. Thanks.