Versa-Torch Mix Tube for Oxygen/Acetylene Tips is the connector between your Versa-Torch torch body and the tip. It is called a mix tube since it is where the oxygen and fuel come together before exiting the tip.
Use this mix tube oxygen and acetylene or hydrogen. It screws into the standard Versa Torch handle allowing acetylene soldering tips and small heating tip to be used.
The overall length of the mix tube is 5-1/2".