Natural material: Hamster hideout wood from the nature of birch, very safe for pets, to meet the needs of pets close to nature.allowing Multi-function: Hamster wooden toy has hamster dodge, hide, grind teeth, rest, decorate the hamster house and more functions Keep teeth healthy:The surface of the hamster tree hole is a bit rough, which just allows the hamster to grind its teeth. It is made of natural cedar wood, so there is no need to worry about harming the pet's health. If a pet's teeth are too long, it can affect eating, so tooth grinding toys are essential Alleviating boredom: Hamster natural wood tunnels have a hole to attract and encourage hamsters to quickly climb up and explore, increasing pet exercise, digging, and promoting physical and mental health Size:The length of the hamster tunnel toy is 4.72 in/12 cm, the height is cm, and the diameter of the hole is 1.96 in/5 cm.Confirm the size before purchase Our Dutch pig wooden tunnel is made of natural birch, with a slightly rough surface and an opening in the middle. It meets the needs of the hamster to chew, rest, hide, explore, decorate the house and so on.Natural materials are safe and durable for pets. Rough surfaces can be used by pets to grind their teeth. Pets can explore and exercise through the opening of the tunnel. Suitable for hamsters, guinea pigs, dwarf mice, Dutch pigs, rats and other small animals.Our products include a hamster hiding in a tree hole, a carrot, a pine cone, two love grass cakes, and five apple branches. Specification Color:White Material: Nature Birch Package includes: 2xPcs Natural Wooden Hamster Tunnel 2xPcs Pine Cones 2xPcs Grass Cake 6xPcs Apple Branch 2xPcs Grindstone Product Size: Hamster tunnel toy is 4.72 in/12 cm,Diameter of the hole is 1.96 in/5 cm