Generic Pneumatic Push in Quick Touch to Y Shaped Connect Fitting 1/4" OD Tube x 3/8" Male NPT Quick Coupler (Pack of 25) Net Weight: 24.2g/pc Materies: nickel plating brass C37700. Tube Size and Thread:1/4" OD x 3/8" Male NPT. Type: Y Shaped Male Connector Quick and simple installation,designed for the polyurethane or nylon tubing