Dixon® Quick Disconnect Pneumatic Nipple, Industrial Interchange, Series: DF Series, 1/2 in Nominal, Quick Connect Coupler x Push-Loc Hose Barb End Style, 2.67 in Length, 500 psi Pressure, -40 to 250°F, Steel, 0.75 in OD Dixon® D4B4 DF Series Industrial Interchange Quick Disconnect Pneumatic Nipple, 1/2 in Nominal, Quick Connect Coupler x Push-Loc Hose Barb, 500 psi Pressure