The Weldmark by Superior WEM YV420 Argon/inert gas Y connector is designed for use with two cutting and/or two welding torches at once, MIG/TIG gas lines, and approved for inert gas. It is constructed from brass, and has a maximum fitting pressure of 200psig. Technical specifications are CGA 032, and regulator side nut type B. The thread types are .625-18 right hand UNF threads, with male threads on the regulator side, and female threads on the outlet side. Made in the United States.