Features: 1.U line can change the direction of the channel. 2.Suitable for hamsters, gold bears and other pet toys. 3.The product can be connected so that you can create more modeling channels. 4.The pipeline has an opening that allows you to breathe freely without affecting the game. 5.Hamster DIY outdoor pipe fitting assembly 6.Encourage healthy play and exercise 7.Applicable to multi-layer cage, expand the space< /p> 8. Ideal for hamsters, gerbils or mouse cages Package content: 1 x three-way hose. 1 x long straight pipe. 2 x short straight tube. 4 x curved tube.