Floralby2Pcs Bottle Top Waterers Sprayers Bottle Cap Sprinklers Nozzle Head for Plants Watering

Does not fit standard U.S. water bottles as it too large. I was able to make it fit by wrapping some vinyl tape around the neck of the bottle. I any event, the sprinkle holes are too big and so the water comes out essentially same as if you were just pouring it. Not good for watering seedling trays, which is why I bought it. I would not recommend.

Doesn't work on any of the water bottles I tried.I threw them away.

I attached to a 2 liter bottle and it works great! Gives a nice gentle water to tender plants and seedlings.