I would not recommend someone to buy this specific product. I placed it in a cage with only one hamster and literally after a few hours, it had dissolved. It is not acceptable for a product for rodents (which is given that they like to chew on objects) to be so cheap and fragile.
To make it understandable what I mean, I also have another tunnel from a different company (6 euros more expensive) inside the cage, which after many months of use has hardly suffered any damage. I do not recommend the product.