PetSafe Busy Buddy Refill Ring Dog Treats for select Busy Buddy Dog Toys, Natural Rawhide, Size Medium, 2-Pack 2-Pack, Refills contain 16 rawhide treats each (Total of 32 Refils) ; Different Packaging but same great-tasting treats All natural treats Specifically made for the Bristle Bone Dogs will love them Diameter of the ring: 50 mm Diameter of the inside hole: 16 mm Thickness of the ring: 5 mm