5pcs TIG Welding Torch Standard Alumina Ceramic Gas Lens 54N18 #4 for Torch 17, 18 and 26 Premium quality TIG welding torch Alumina ceramic gas lens cups 54N18 #4 for torch 17, 18 and 26. Use with 45V series gas lens collet body in torch 17, 18 and 26. You get Five (5) Alumina gas lens cups 54N18 #4 at this price. We use U.S. Postal Service (USPS) as main carrier. Please provide a USPS deliverable address.