This replacement downstem is available in several different lengths and is used to connect a 14mm slide/bowl into an 18mm stemless opening. The standard 6-cut style is what you would find in most bongs. Downstems are measured from the bottom of the diffuser to the top of the ground joint.
This item features a male joint. It will fit all female jointed pipes and accessories of the same size.
Product detail:
18mm To 14mm Female Joint
Available In Multiple Lengths
Holds 14mm Male Bowls