I had some luck on amazon and recently reorder watering nipples. I intentionally repurchased the onces I had previously and got a different valve ment for guinea pigs. They like to push in with tongue, rabbits like to chew. I order 2 different replacement sets from 2 different vendors and both for guinea pigs and being advertised as being for rabbits. So I broke down and bought these. There not cheap but they work right. https://www.allthingsbunnies.com/Original-Drinking-Valve-1-8-MPT-p/aws109.htm Into copper tubing . that uses a large pot for a resevior (I place a clear tote over the black pot in winter). I use a very short heat tape (In zone 5).

I don't know how amazon allowed "Citizen Vigilante" (2026) on prime. It is the antithesis of everything amazon stands for. Its banned in Germany so far. It does not pander to the migrants crimes that all EU government support if not encourage.