This is a wheel for chipmunks. It might be too big for hamsters. It has been kept in the room for a while, although it has hardly been used. The cork on the inside sometimes peels off. It will be shipped in the condition shown in the 6th photo. The wheel diameter is 29cm, and the height including the stand is 31cm, but these are amateur measurements. Please consider purchasing only if you agree to all of the above. *I am new to selling on Mercari, so I apologize for any inconvenience caused by my inexperience.