QDC (High Flow) No-Spill Shutoff, Female Angle [For ID: 13mm (1/2"), OD: 16mm (5/8")], Koolance (patent-pending) quick-disconnect no-spill shutoff valve. 13mm (1/2") ID female swiveling elbow connection with compression fitting. 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/