This gun nozzle is very useful when using together with the clever injector. We did manufacture our own wands with all the correct equipment just like the US use. We found that they lasted on the ball valve the same amount of time as this one.  It comes with a twist nozzle. The pencil setting is great for projecting onto roof washing and gable ends. The fan nozzle setting is perfect for flat work. The trigger allows you to adjust the flow rate when necessary. It also comes with a male hose connector. Simple to use and effective and reasonably priced for replacement when necessary. It’s always good to have a second one in your van for when eventually the sodium hypochlorite claims its victim.