I wanted to try out the 5gal food grade plastic Primo water bottle from Walmart for fermentation. It is around $15, so a good price. The large neck doesn't work with my stoppers for 1gal and 3gal bottles/carboy so gave this a try. I fits well for the 5gal Primo bottle. Primo bottle has a handle built in and the stock cap fits well so nice for manhandling the full bottle when needed.

Seems to be of good quality

Originally confused trying to find a topper for the 3 gallon better bottle. This works.

I have never had such a beautiful #10 drilled stopper in my life, not to mention as many requests about it
Keep drilling!!!!

Thanks Midwest - y'all are great.