The Campbell Hausfeld 3/8-inch hose end (MP320700AV) creates or repairs air hoses. Just insert the barbed end into a 3/8-inch ID air hose and then crimp with a ferrule or secure with a hose clamp for a finished air hose with a 1/4-inch male NPT end. Corrosion-resistant brass construction for long life. Finish your projects faster and easier with Campbell Hausfeld. The Air Power Expert. ®