Fieldpiece 1504578 Dig Manifold 4Port Analyzer The Sman4 is a 4-port, Wireless digital MANIFOLD with a large 3/8" port for faster evacuations and recovery with four ports and a built-in vacuum gauge, hvacr pros can now evacuate asystem, pull a vacuum, add refrigerant and dial in the charge at one time, without having to hook and unhook any hoses Manufactured in United States