WeldingCity 2-pk Gas Diffusers 35-50 for Lincoln Magnum 100L and Tweco Mini/#1 MIG Welding Guns Premium quality Lincoln/Tweco style MIG gas diffuser 35-50 Work with 11 series contact tips Lincoln/Tweco 100L and Mini MIG guns. You get Two (2) gas diffusers 35-50 at this price We use U.S. Postal Service (USPS) as main carrier. Please provide a USPS deliverable address.