Features: 1. Our hamster tube is made of sturdy plastic, durable and easy to assemble and disassemble for cleaning. Curious pets will be attracted to interesting tunnels which will enhance their ability to climb and explore. Satisfy your pet's natural instincts. 2. Curious pets will be attracted to interesting tunnels which will enhance their ability to climb and explore. Satisfy your pet's natural instincts. 3. There is no gap in the tunnel connection; the pet's paws will not be caught and the smooth interior will not hurt the pet's paws. 4. Great for hamsters, ferrets, rats, guinea pigs and other small pets. Our hamster cage tubes kit is a set and they can be connected together to form a continuous tunnel system with same diameter openings. 5. We strive to provide each customer with the highest standard of service to ensure a pleasant shopping experience. Specification: Entrance Diameter: 5.5cm Material: Plastic Color: White, Pink, Blue Notes: 1. Due to lighting effects and shooting angles, there may be a slight color difference in the product. 2. Due to manual measurement, there may be a small tolerance in product size. Includes: 1 Set * Hamster Running Tunnel