Cat Toy, Spins with a Mouse to Chase, includes Scratch Pad on Top, Play Balls for Hours of Kitty Entertainment Keep your cat busy for hours with this interactive Cat Scratch Pad Spinning Toy and includes 2 Play Balls with Bells A compact and lightweight design with a durable scratching board on top and a mouse inside that spins left or right along a track. Measures approximately 10" in diameter This toy satisfies cats' predator instincts for pouncing and hunting mice. No batteries required 2-piece Cat Play Balls with Bells Set featuring 2 large plastic two-toned play balls with a bell inside each one Each ball has a diameter of approximately 2 1/2"