Exercise and fun: comes with a ringing bell with a crackling sound and is easy to attract your cat's attention. Encourages instinctive behaviour and exercise to keep your cat healthy and alert. Used on any interchangeable cat toy with hooks. Improve the relationship with kittens: with this worm toy, you can interact with your kittens. Bring you and your cat a happy time. High quality and safe: all squiggly worm toys are made of safe material that is flexible in rotation and strong in tensile and elastic force, no fading and no shedding, soft, have endless fun with your cats. It is safe for cats, but does not mean it can be swallowed. Additional replacement cord for cat wand toy: we add 1 black replacement cord, you do not have to worry about the cord breaking off the cat wand or you can hang it on the scratching post for more fun. Great value for moneyWe have 12 pieces (Random color). Your cat will never get boring again and chase the same old feather or even worm.