Koolance (patent-pending) quick-disconnect shutoff valve. G 1/4 threaded male nozzle for screwing directly into a water block or other component. It will fit any Koolance VL3 High Flow female shutoff valve.Koolance's new VL2 & VL3 quick disconnects offer easier connection and disconnection than previous VLV models. The internal flow characteristics have also been improved. For compactness, VL2 has a smaller profile (and therefore smaller internal diameter) than VL3.After a quarter twist, the quick-disconnect nozzles will separate. Liquid on both sides will be automatically obstructed with only 0.5-1mL freed. Nozzles are nickel-plated brass.