This nozzle is true to it's name in that it is truly a Quick Connect nozle. It can be put on a ball shut off and controlled without shutting down the hose lay or opening and shutting the gate on an engine. Or, it can be changed over from a garden hose nozzle in seconds to fill an empty back-pack pump. AND, it can be stored neatly in small spaces at only 3.5" long. With three quick steps this nozle is up and running: 1. Quick disconnect the pump hose 2. Quick connect the refill nozzle 3. Turn water on at ball valve. Reverse steps when the bag is full.