The John Guest 3/8" Stem x 5/16" Barb Tube To Hose Adapter is a plastic fitting designed to connect a 5/16" barb hose to a 3/8" stem. The fitting is made of durable plastic and features a stem on one end and a barb on the other, allowing for a secure and leak-free connection between the hose and the tubing. Some of the key features of this adapter include:
- Connects a 5/16" barb hose to a 3/8" stem
 - Made of high-quality plastic for durability
 - Leak-free connection
 - Easy to install and use
 - Compatible with a wide range of tubing and hoses
 
This adapter is ideal for use in a variety of plumbing and fluid transfer applications, including water filtration systems, water dispensers, and more.