WeldingCity 10-pk Contact Tip 11-30 for Lincoln Magnum 100L and Tweco Mini/#1 MIG Welding Guns Premium quality Lincoln/Tweco style standard contact tip 11-30 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.