The only nozzle I remember mom using on my siblings and I was the adult rectal nozzle that looked like a baseball bat. Grandma on the other hand, started using a long curved bulbous head douche nozzle in place of the red colon tube she used when she gave us our first 3H enema the summer I turned nine.
She had a variety of different nozzles and types, being a retired RN. First, the standard adult and infant rectal nozzles that were shaped like baseball bats. Second, various lengths and sizes of colon tubes. And third, three different types of curved douche nozzles. Two of the curved douche nozzles were very similar, having four valleys and a set of three holes in each valley. The only difference between the two was, one had an additional hole in the tip and the other didn’t. The third type of douche nozzle had a smooth curved shaft with a bulbous head and a ring slit on top. Making the water come out in the shape of a “O”.
Both grandma an our aunts preferred using a douche nozzle when they gave us enemas, using whatever one happened to be attached to the bag hanging in the shower at the time. Mom on the other hand never gave us enemas at grandmas, only at home, an always used the adult rectal nozzle.
Once grandma taught us personal hygiene as preteens and we started doing each other, we used both the adult rectal and curved douche nozzles. However, the older we got the more we used the curved douche nozzle. And like grandmas, we had the same three different types of curved douche nozzles available at home, and our preference was the curved douche nozzle with the bulbous head.