Push-Lock Fittings, Quick Fittings 1:Application:Compressed Air,Fluid 2:Materials ... pneumatic fittings, rapid pneumatic fittings for plastic tubes, banjo pneumatic fittings, etc.Push-Lock FittingsTube OD: 04, 05, 06, ... 08, 10, 12, 14 mm, 1/8, 1/4, 3/8, 1/2 ... (GP Series)Tightness Ring: Brass (GP Series)Push-In fittings with different shape, only one hand can ...