This is a Mold injected plastic base with internal magnet. It helps the propane tank stand and prevents the bottom of propane tank from getting damaged which leads to the tank tipping over and damaging your igniter or the project you are working on. This base is intended for Bernzomatic propane tanks.
The Red adapter ring is 3D printed ABS plastic and is intended to be used with the Blue Bernzomatic Propane Tank.
Propane tanks not included