Koolance (patent-pending) quick-disconnect no-spill shutoff valve. 10mm (3/8") ID female swiveling elbow connection with hose barb and clamp. It will only fit any Koolance VL3N male shutoff valve.After a quarter twist, the quick-disconnect nozzles will separate. Liquid on both sides will be automatically obstructed with only 0.2mL freed. Nozzles are nickel-plated brass. Maximum operating pressure is 2-2.5kgf/cm2 (28-35 psi). Maximum operating temperature is 90°C.