Actually, I ordered 2 of the Jaclo DD-15 cup holders. Basically, I ordered those particular cup holders because they matched my bathroom faucets. I was disappointed because the Solo plastic cup (also 3 oz.) would NOT work in the cup holders. Only a paper cup would work in these holders. I do really prefer a plastic cup because the paper cups are so flimsy & normally the paper cups only come in multi-colored patterns that are not all that pretty. Other drawback was the price. These were the only cup holders that I could find on the market that were really a quality product that fit my expectations.