14mm female to 14mm female adapter
These adapters will allow you to use two male joints together. The adapters are sturdy and approximately 2.5" tall, and will work with your favorite water piece and vaporizer adapter.
To attach two x 14mm male pieces, select the 14mm female to 14mm female adapter.
To attach one x 14mm male and one x 18mm male piece, select the 14mm female to 18mm female adapter.