WeldingCity 2 Gas Nozzles 21-37 3/8" for Lincoln Magnum 100L and Tweco Mini/#1 MIG Welding Guns Premium quality Lincoln/Tweco style MIG gas nozzles 21-37, 3/8" orifice. Work with gas diffuser 35-50 or 51 in Lincoln Magnum 100L and Tweco Mini/#1 MIG guns or equivalent guns. You get Two (2) gas nozzles 21-37 at this price. We use U.S. Postal Service (USPS) as main carrier. Please provide a USPS deliverable address.