Rubber bone and nylon bristles clean your dog’s teeth while they chew away at the Gnawhide® treat rings. The safe, healthy toy’s unique design prevents dogs from gorging on treats. Bone unscrews for cleaning and treat replacement. Each Bristle Bone comes with two sets of Gnawhide treat rings. Additional Gnawhide Refill Rings sold separately.
Bristle Bone – Sizes:Medium (20- to 50-lb. dogs), Large (50-lb. dogs and up).
Gnawhide Refill Rings 16-Pack – Sizes:Medium (fits Medium Bristle Bone), Large (fits Large Bristle Bone).