Its precise 3/8inch interfaces design makes addition more convenient and suitable for daily maintenance of air conditioners and refrigerators Make of brass, it has excellent corrosions resistance and extends its service life ensuring smooth and stable fluorine addition process The precisely machined sealing structure effectively prevents leakage Suitable for adding fluorine to air conditioners and refrigerators Provide stable liquid addition control to ensuring the normal operate of the refrigeration systems, Manufacturer: MINGLEA