Material: High-quality non-toxic plastic Specification:The stand is 13.5 cm long, 7.5 cm high, the running wheel is 6 cm wide, 12.5 cm in diameter, and weighs 100 g. ConsortSuitable for small mice such as hamsters, three-line, silver fox, dwarf, and in-laws. Features:The hollow design on both sides of the running wheel is more breathable and can meet the aerobic exercise of small pets. The triangle bracket design on both sides is more stable and prevents rats from tipping over when used.The widened base designmakes the placement more stable and no longer afraid of the running wheel tipping over. Necessity:You can give your hamsters space to go out without worrying about hamsters running around. Select high-quality environmentally friendly plastics, safe and healthy, and care for the health of hamsters. Like any creature, it is very important to develop a good habit. With a pet, hamsters are very concerned about the cleanliness of their personal space. The fun running wheel is not only a toy, but also a fitness tool. Like any living creature, a hamster also needs a private space of its own that makes it feel safe. When it comes to a house, it can have a strong sense of security and it is necessary to have its own space. Dont worry about the hamsters having no free space or messing up the house when they are playing. You can have your own toys and have your own leisure space to have a good rest.