Value Plastics 1860-1 White Nylon Tube Fitting, Classic Series Barbed Adapter, 1/4" (6.4 mm) Tube ID x 1/8-27 NPT Male (Pack of 25) Adapter with angled barbs for connecting pipes or tubing of different types Fitting connects to tubing on one end and an NPT male connector on the other Nylon for strength, flexibility and crush resistance Longer barb extends the sealing surface of the fitting Hex nut construction for tighter, leak-free connections