Knotted ball, Natural Rubber, 10 cm, for Dogs Product presentation: It is made of non-toxic and bite resistant rubber material, which makes the owner more comfortable.The built-in pure copper bell can make the dog more happy to play. While playing, it can remove the dirt in the dog’s teeth and keep the teeth clean The braided ball has built-in pure copper bells, which tinkle and move as long as you touch it, making the dog crazy. Quantity: one pack