Dog Toy -Outdoor Pet Hamster Tunnel Highlights Generic Brand Outdoor Pet Hamster Tunnel Description: U-type pipe can change the direction of the channel. The product can be connected, you can create more modeling channels. Wide Application - Suitable for hamsters, gerbils, mice and other small pets. High quality eco-friendly plastic, non-toxic, odorless, healthy and wear-resistant. The pipeline has a vent, allowing them to breathe freely inside, does not affect their playful play. Specification: Material: Plastic Tunnel Inner Diameter: Approx 5cm Long Straight Tunnel: Approx 15cm/5.91inch Short Straight Tunnel: Approx 6.5cm Three Way Tunnel: Approx 9.5 x 8cm/3.74 x 3.15 inch Bend tunnel length: about 10.5cm Package includes: 4 pcs tunnel Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures . Please allow slight dimension difference due to different manual measurement.