The NOS PEGO-M78 Argon & Carbon Dioxide Regulator is a high-quality welding accessory that is specifically designed to regulate the flow of argon and carbon dioxide gases for welding and soldering applications. With the PEGO brand known for its reliability and durability, this regulator ensures precision and control over gas flow, making it an essential tool for metalworking and manufacturing processes. This particular regulator has never been used and is a rare find, as shown in the pictures provided.