Y type three way push in fittings,material is plastic,good quality ... can provide a variety of one touch fittings Y type three way pipe one touch fittingssurface material: plastic or brassOperation instruction ... diameter 0.1mm,If use the air tube with oval section,then suggested use the air pipe whose difference of ovallong ... 2mm.tube size: 04,06,08,10,12.. Y type three way push in tube fittings (stock)