Hydro Flow? by Netafim 5 mm connectors are designed to make the connection between your poly distribution line and your 5 mm UV Super Flex white polyethylene (747560) feed line. Thread the connector into your 5 mm tubing. Select the location in the distribution line where you want your feed line to come out. Place a hole in your distribution line, using a hole punch and insert the barbed end of the connector. Now you are ready to choose your method of water delivery. Drip Stakes, Spray stakes and button emitters are all available.