These Mouse Frenzy refills are compatable with the Da Bird, Cat Catcher, Clarion Baton and Frenzy Flyer poles and wands. It is a lot like the Cat Catcher mouse but larger! *Realistic hair toy activates your cat"s hunting instinct *Cats go crazy with this refill! *Even lazy and fat cats cannot resist it *You need to hide it away while not in use!! The Frenzy Mouse refill is made of 100% genuine North American whitetail Deer hair. The hair is a by-product from free roaming, outdoor reared herds from North America and are protected under America"s Animal Welfare Laws and The North American Deer Farmers Association®. Frenzy Cat Toys are completely against animal cruelty and the killing of animals just for their skins/ fur. All materials are selected carefully to ensure that the animals are treated with respect, humanely and only use skins/ furs which are a by-product of the food industry which would otherwise go into land fill so no animal is harmed simply to provide fur/ hair. Made with the hair securely fixed to a plastic tube running through the middle (No sharp metal bar like other brands). The connection to the wand toy is via a metal hook on the front securely fixed inside the plastic tubing all hidden under the hair. As this is a natural product, colours will vary slightly with grey & light brown combinations. Simply clip it on your compatable wand/pole and play! ***This is the refill/attachment only, wand/poles/rods are available separately. As with ALL cat toys, please supervise play and replace if damaged.