Gas Jet 121 Natural Gas or LPG Conversion Nozzle Injector Orifice Size 1.21mm M6
Will work for Natural Gas, G20, Propane G30, Butane G31, Calor. GAS JET NOZZLE INJECTORFOR CONVERTING YOUR GAS APPLIANCE. SIZE IS: 121 (1.21mm Orifice). There is a +/- tolerance of 0.07mm allowed on jet sizes.