About this product: Large Playing Space: : The outer pipe allows more space to expand the cage, giving the pet more room to move around. The inside diameter of the pipe is approximately 5.5 cm. Please measure the required size before placing an order, to give your pet 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 bent pipes, a total of 8 sections. Ideal for hamsters, gerbils or mouse cages. Upgraded Material: : The hamster pipes 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 set of pipes. You can create a new exercise room for your lovely pet without instructions. The transparent shell allows you to know the appearance of its movement more clearly. Product Description: Description: Product Name: White Hamster Tubes and Tunnels Kit. Moderate exercise is very important for hamsters. Without proper exercise, hamsters will get too much pressure and fight with each other and bite the cage. At the same time, since current owners give hamsters very good nutrition, which often makes hamsters overweight and easily causes cardiovascular disease, it is better to exercise every day. Colour: Clear. Specifications: Caliber 5.5cm, about 5.5cm. Material: The hamster pipes are made of high density plastic, sturdy but relatively easy to disassemble/change. Highlights: 1. The outer pipe provides more space to expand the cage, giving the pet more room to move around. 2. A very simple to splice pipe assembly. You can create a new exercise room for your lovely pet without instructions. The transparent shell allows you to know the appearance of its movement more clearly. Content: The pipe set includes a long straight pipe, two short straight pipes, a T-pipe, four separate bent pipes, a total of 8 sections. Ideal for hamsters, gerbils or mouse cages. Since all hand measurements are taken, the sizes shown Actual colors may vary from those shown in the photo depending on your monitor display settings, thank you for your understanding.