this production for the  production line of air condition ,refrigerator  ,water dispenser,  refrigeration industry etc ; it will be connect between  compressor's  copper pipe  and gun of refrigerant charging machine ,

advantage:

         1)operation easy and effcient

         2)durable

specification:

          1)1/4"  male/female  

          2) 3/8"  male/female

copper quick coupler