1Made of high quality pine, not easy to damage, high wear resistance. 2Exquisite workmanship, polished treatment, prevent from scraping pet hair. 3Wooden material is resistant to bite, can help pet teeth grinding, can be used for a long time. 4With round gasket, suitable for most cages; With screw, it can be tightened manually without tools, providing a safe home for pets. 5Pet rat and hamster can easily exercise, play, chew and play games on the pedal to relieve boredom.