DIXON DF-Series Pneumatic Hose Barb Plug, Nominal Size: 1/4 in, Male Connection, 500 psi, Temperature Rating: -40 to 250 deg F, Steel, Trivalent Chrome, Silver, 0.375 in ID x 0.56 in OD Dia, 2.09 in L, Suitable for: Foster 3, 4, 5 and 6 Series, Parker 30- Series Automatic Interchange and Parker 20-Series Manual Interchange, Hansen 3000, 4000, 5000 and 6000 and Hansen 1000, 400 and 500