[Large Playground]: The outer pipe leaves more room to expand the cage, giving the pet more room to move around. The inner diameter of the pipe is about 5.5 cm. Please measure the required size before ordering, to provide your pet with a suitable and comfortable gym. [Excellent Pet Exercise Room Set]: The pipe set includes a long straight pipe, two short straight pipes, a T-pipe, four separate elbow pipes, a total of 8 sections. Ideal for hamster, gerbil or mouse cages. [Improved Material]: Hamster hoses are made of high density plastic, sturdy but relatively easy to disassemble/change. Easy to clean. Perfect hamster toy, record every lovely moment. [Easy to Use]: A very simple pipe set. You can create a new exercise room for your lovely pet without instructions. The transparent shell lets you know the appearance of its movement more clearly.
