Needed to clean my bestway pool, didn't like the garden hose method. So searched on here and found a great nozzle here https://www.thingiverse.com/thing:224431.
Wanting to use one of the filter pump inlets I had a spare outlet with a screw on nozzle. So this fits onto that allowing me to connect the nozzle to the other end of the hose.
I printed mine with the thread side on the bed, but it should print fine the other way up with little to no supports.