1. go to qc supply and look at the diff types and you will figure out the difference
2. screw in type works great if you drill the right size hole i think 11/32 if you get the hole to big you could use psh in type in it
3.you can find them on ebay for cheap but i cant vouch for the quality
i got mine from qc and also got free chore gloves athe price is bout the same from qc or farmtek but shipping is waaay betterat qc
order extra because once you switch you will want to build more for all over and as this makes your waterer so much cleaner you wont have to spend time scrubbing poop out of the trough
2. screw in type works great if you drill the right size hole i think 11/32 if you get the hole to big you could use psh in type in it
3.you can find them on ebay for cheap but i cant vouch for the quality
i got mine from qc and also got free chore gloves athe price is bout the same from qc or farmtek but shipping is waaay betterat qc
order extra because once you switch you will want to build more for all over and as this makes your waterer so much cleaner you wont have to spend time scrubbing poop out of the trough