I have about 6!Consider more than 1 j-rod and purchase multiple nozzles. Example, I have multiple j-rods loaded with the high/low nozzles ranging from #10 through #40 size orifice. I have several more loaded with straight low pressure nozzles so I can rinse with a 0, 5, 15 or 25 degree nozzle without needing to change out the entire j-rod holder. In most cases, I use the 0540 and 1540 nozzles for both application and rinsing.
little off topic but also try out the adjustable down streamer xjet I prefer it over the j-rod