WishLotus Hamster Tubes, Adventure External Pipe Set Transparent MaterialHamster Cage & Accessories Hamster Toys to Expand Space DIY Creative Connection Tunnel Track Rat Toy (White)

【Large Space for Your Pet】: The external ducts expand the space for the cage, thus providing more places for mice to move.
【Simple Installation】: Hamster tunnels can be connected with both hands, it is simple and convenient, and you can splice as you like.
【Sturdy Material】: Use hard plastic to prevent pets from biting it. Hamster tube set is more fun and durable. Save more money for the owner.
【Matching Use】: You can mix and match the outer track at will, and several groups can be spliced together to connect the hamster bathroom of the same diameter.