The FRANKLIN PET SUPPLY CO® RSF Mini Squeaker tennis balls are a major upgrade to you and your pet's play time! Throw out the old boring tennis balls and enhance the active play experience with these squeaker balls. Our tough and durable material hold up to slobber and dirt. These balls are 1.75" mini sized perfect for your smaller dogs. Show your pet how much you love them with the best fetch ball around, RSF Squeak Tennis Balls!