Unitter Dogs & Cats Chewing Toy, Pet Puppy Knotted Rope Toy Balls, Pet Biting Training Balls with a Tug, Large-sized Cotton Rope Ball, 2 Packs (Color of Toy balls Will Be Sent at Random) Ideal for aggressive chewers. The total length is 7.5", The diameter of ball is 2". Tough rope is knotted into a heavy ball and attached to a pull. Chewing rope helps improve oral hygiene by helping to clean teeth. Note: Colors will be sent depend on the stock.