Panasonic:CO2 welding torch200A 3MRating:180A CO2 150A Mixed Gas, Duty Cycle 60% Wire Diameter: 0.6-1.0mmCO2 welding torch350A 3MRating:350A CO2 320A Mixed Gas, Duty Cycle 60% Wire Diameter: 1.0-1.4mmCO2 welding torch500A 3MRating:500A CO2 450A Mixed Gas, Duty Cycle 60% Wire Diameter: 1.2-1.6mm