2pcs TIG Welding Torch Teflon Inserts 18-7 for Torch 17, 18 and 26 Premium quality TIG welding torch Teflon inserts 18-7 for torch 17, 18 and 26 Insert between back cap and head body You get Two (2) 18-7 gasket insulators at this price. We use U.S. Postal Service (USPS) as main carrier. Please provide a USPS deliverable address.