Stem for 14mm to 14mm

A Down Stem is a piece of scientific glass that connects a tube-style water pipe to its slide bowl. It's easy to break and can get quite dirty so people like to have replacement options. This particular down stem has a 14mm male fitting and 14mm female fitting. It's made to fit into a water pipe with a 14mm opening. It leads up to a female fitting with a 14mm opening.