Looking at bong and joint size says 18.8 so do I need a 18.8mm size bowl or a 14? Not new to smoking but new to bongs thanks
its not really the joint on the bong you have to worrie about unless its stemless its the down-stem that holder the bowl either 18male to 18female or 18male to 14female basically if its a small hole its 14 if its big it 18