Profax® Lincoln® PXT140502733 MIG Gun Consumable, Contact Tip, Style: Threaded, 5/16 Inch Outer Diameter x 2-3/4 Inch Length, Connection: 5/16-18, Tip Size: 0.108 Inch, Wire Size: 3/32 Inch, For Type/Brand/Model: K126 And K264 MIG Gun