1.5-inch QDC complete assembly including ferrule, sleeve, and retaining ring. Does not include o-rings. Uses AS568A-221 standard o-rings which can be ordered separately. QUICK DISCONNECT COUPLER KEY FEATURES:Quickly connects and disconnects most fluid plumbing and intake/intercooler pipingHigh-tech alternative to traditional hose and clamp couplingSignificant cost advantage over existing high-priced coupling systemsEasy to Use! One hand operation with no tools requiredAllows for connection of misaligned tubesDelivers a flexible connection during useNo internal restrictionPrecision CNC-machined from 6061 T-6 aluminumMade in the U. S. A.