The product is a set of three never-used Sherwood CGA540 cylinder valves designed for inert gases such as argon, helium, and nitrogen. Made in the United States, these gas valves are sold as a single unit. Ideal for welding and soldering equipment, these high-quality valves are a reliable and efficient choice for those in need of precision and control in their gas handling needs.  Will not separate.   All are NOS.   Very fast shipping.   No bidding required.   You can buy it now....