Dixon® Female Quick Disconnect Pneumatic Plug, ARO, Series: M Series, 1/4 in Nominal, Quick Disconnect Plug x NPTF End Style, 11/16 in Hex, 1.57 in Length, 300 psi Pressure, -40 to 250°F, Brass, 0.79 in OD Dixon® M2F2-B M Series ARO Female Quick Disconnect Pneumatic Plug, 1/4 in Nominal, Quick Disconnect Plug x NPTF, 300 psi Pressure, Brass