The Coolrunner Hamster Chew Toys are perfect for any hamster owner who wants to provide their pet with some extra entertainment. These toys come in a set that includes a ball swing, molar string, ball swing, unicycle, hollow tree trunk, dumbbell, pine cones, and bell roller. The set is made of high-quality wood that is easy to chew and grind. The exclusive anti-corrosion technology ensures that the toys will last for years to come.