Brand new and high quality. Running wheel wide , comparatively light , Hamster run up relaxed . Suitable for hamsters, gerbils and other friends. High quality running surface is safe and comfortable for your friend's feet. Can be used free standing or attached to cage. application for Hamster Squirrel Guinea pig and other small pets training and exercise pets, it's good for pets' health colour:Random Color, colors cannot be material: plastic size: diameter about :12.5CM bracket length :13.5CM height :7.5CM run wheel width :6CM Package Contents: 1*Hamster Running Wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.