Exercise and Fun: Comes with a bell with a rustling sound, it’s easy to get your cat’s attention. Encourages instinctual behaviors and exercise to keep your cat healthy and alert. Used on any interchangeable cat toy with a hook connector Improve relationships: With these worm toys, you can interact with your kittens. Bring you and your cat a happy time Extra Spare Cat Wand String: We add 1 spare black string on this package, you don’t have to worry about the string breaking of the wand for cat, or you can hang it on the cat tree for more fun. High Quality and Safe: All Squiggly Worm toys are made of safe material which is flexible in rotation and strong in pulling force and elasticity, no fading and shedding, soft, have endless fun with your cats. It is safe for cats but does not mean it can be swallowed. Great value for money - We have 12 pieces in two combinations to choose from (6 colors: green, blue, purple, pink, yellow and orange). The cat will never be bored chasing the same