6 Refills for Ongoing Fun: Package includes 3 natural feather, 1 tassel fish, 1 tassel mouse, 1 tassel rabbit tail. When the original one is down after long time aggressive play, you can get those replacements to sustain fun play for your cats. Easy Replacing: How to install the refills? Simply thread the hanging rope through the gap in the hanging hook and hang it on the hook. Safety for Pets: Made from non-toxic materials and designed for pet safety, these cat toy refills provide worry-free playtime for your beloved feline friend.