New GravLabs bong, need help finding the joint size... cant find anywhere

researchkitty

Well-Known Member
14mm is the size you need for the bowl.

To stop the downstem from coming out when you pull the bowl out, insert the downstem properly. How is it inserted properly you ask? When you push it in the tube, give it a little quarter turn and push at the same time. That locks the downstem in the ground joint, and allows your bowl to pull out without interference.

GL
 
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