These quick disconnect couplings with barbed ends are ideal for use with 1/4″ or 3/8″ id flexible tubing. Acetal construction with viton o-rings offer good fuel resistance. Coupling bodies are available in panel mount or in-line styles, with or without an internal shut-off. For each coupling body ordered, you will need an appropriate coupling insert. Working pressure: 120 psi, operating temperature -40° F to 180° F.