WeldingCity 10-pk Heavy Duty Contact Tip 14H-23 for Lincoln Magnum 200-400A and Tweco #2-#4 MIG Welding Guns Premium quality Lincoln/Tweco style heavy duty contact tip 14H-23 0.023" Work with gas diffuser 52, 52-23, 52FN and 54A in Lincoln Magnum 200-400 Amps or Tweco #2-#4 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.