I've tried some other ones and these ones work the best. They are easy to take on and off. They don't leak. Most importantly, they have a great seal when they are used with my water dispenser. Other ones I've used don't have a good seal and will always leave residual water in the receiving part of the cooler. These ones don't do that. I will buy again, for sure.
Rating: [5 of 5 Stars!]