WeldingCity 5 Gas Nozzles 23-50 1/2' for Lincoln Magnum and Tweco MIG Welding Guns Premium quality Lincoln/Tweco style MIG fixed gas nozzles 23-50, 1/2" orifice Work with gas diffuser 52FN/54A in Lincoln Magnum 300/400 and Tweco #2-#4 MIG guns or equivalent guns. You get Five (5) gas nozzles 23-50 at this price. We use U.S. Postal Service (USPS) as main carrier. Please provide a USPS deliverable address.