Thank you for viewing. This is a dental teaser for extra-small to small dogs. It's a set of 4, brand new and unopened. These were my dog's favorites, so I stocked up on them. However, my dog hasn't been playing with them lately, so I hope someone else can use them. *Please consider purchasing if you understand that these items are measured and inspected by a non-professional and have been stored at home. Thank you for your consideration.