FunClucks
Songster
I like these ones if the containers have thin plastic walls and I can get my hand through the top because these have a plastic nut on the back I can screw on by hand. This design stopped the occasional leaking I was having with reclaimed/recycled container waterers (Think thin clear plastic food containers). I was using the Rent-A-Coop side nipple version that just screws in, but the thin/flexible container walls weren't holding them well, and the taper on the Rent-A-Coop version wasn't helping either. I switched to these, and no more leaks!!!Mahalo everyone. As suggested, I've decided to try the Rent-A-Coop nipples. We'll see how it goes!