3 Pcs in a package. Diameter of each ball: 7.5 cm. Works well for training dogs (not suitable for fierce dogs or large dogs)Funny Squeaking Sound: Squeaking sound will make your dog more excited. Note: Packed with two other free squeakers as a replacement in case the ball lost its squeak and you can install it by yourself.Irregular beating: The ball with a special shape, so there are no rules for rolling and bouncing, which is difficult to judge where the ball will stop, so the dog training of hunting.Using food grade rubber to ensure safety for dogs. Soft material can protect dog's teeth while grinding their teeth. The maximum thickness of the pet ball is 0.8cm to ensure that it will not be easily destroyed by dogs.If there are any problems with our product, please contact us and we will give you a satisfactory answer.Natural RubberMade of food grade natural rubber, food grade non-toxic, safe to useSound ToysThere are sounders on both sides of the ball, the dog will trigger the sound part during the biting process, increasing the interaction.High elasticityIt has high elasticity at room temperature, can cast far and jump high on the ground, arousing dog's interest.