Here is the description provided by Chewy:
The only drawback is that just four treat rings come with this toy. I love that they are made in the USA.
You can find other great products here: https://www.chewy.com/busy-buddy-bristle-bone-dog-toy/dp/48842 They have incredible prices and customer service; check them out!
Disclaimer: We received the treats free of charge as a Chewy Influencer. All opinions are my own.