Grav Labs 14.5mm Male to Male Angled Joint Glass Adapter
Do you want your bong to use it as a rig? Grav is an easy way of doing so.
This angled joint is meant to transform the female 14 mm joint to a male 14 mm joint. It falls at an angle of 45 degrees, so it is suitable for turning water pipes that have a joint of 45 degrees into a typical angle oil rig. This procedure simplifies the use of nails and domes.