Conversion Kit, Single Stage LP Gas to Natural Gas, 5"-7" Adjustment Range, Includes Regulator Spring, O-Ring, Adjustment Screw and Cap Screw, Used with VR8200, VR8300, VR8104, VR8204, VR8304, VR8205 ( Not the VR8205S ), VR8305, VR4200, VR4300, VR4204, VR4304, VR4205 and VR4305 Series, Standard and Slow Opening Valves, Not for Use with Step Opening Valves