WeldingCity 10-pk Tapered Contact Tip 11T-30 for Lincoln Magnum Tweco Mini/#1 MIG Welding Guns Premium quality Lincoln/Tweco style tapered contact tip 11T-30 0.030" Work with gas diffuser 35-50, 51 and 51-23 in Lincoln Magnum 100L or Tweco Mini/#1 MIG guns or equivalent guns. You get Ten (10) contact tips at this price. We use U.S. Postal Service (USPS) as main carrier. Please provide a USPS deliverable address.