This is a genuine replacement burner used with the Perfectflow 2-Burner Propane Stove. This part is screwed hand-tight onto the manifold. The fuel passes from the manifold into the body of the burner, escaping from the perforations circling the edge where it is lit. This is a one-piece part that is sold individually.
This is a genuine OEM sourced replacement part designed for use with Coleman stoves. The regulator allows only a certain amount of the fuel to the burners. If the grill is flame up, you are either out of fuel, or you have a defective regulator. No tools are required to replace this item simply connect it to the valve. It is made out of metal and it is sold individually.