I would give a 5 star but, when I opened the box to take the bowls out, the 20oz bowls were extremely stuck together, we had to use tools on 4 of them to beat them apart. One had dents in it prior to us trying to get them apart.
Though, after we got them apart, they were exactly what I needed for each of my rabbits for food and water.
So, if you order as many as I did (6 count) and can get them apart if they come stuck together that they will/should work great!