A 14mm downstem is a common size for water pipe accessories, known for balancing airflow and filtration. They are widely available in various lengths, materials, and styles, including popular diffused options for smoother hits.
- Joint Size: The 14mm measurement refers to the diameter of the joint where the downstem connects to the pipe and where a bowl or banger connects to the downstem itself. This size is often considered standard and versatile for many medium-sized bongs.
- Length: Downstems come in various lengths, typically ranging from 3 inches to 7 inches, to ensure the end sits properly in the water chamber. The length is usually measured from the bottom of the ground joint to the tip of the stem.
- Material: The most common materials are borosilicate glass for its durability and heat resistance, and metal or silicone for their strength and flexibility. Adjustable metal downstems like the Ace-Labz Titan-Stem 3.0 are also available.