Brand new and high quality.Running wheel wide , comparatively light , Hamster run up relaxed .Suitable for hamsters, gerbils and other furry friends.High quality running surface is safe and comfortable for your furry friend's feet.Can be used free standing or attached to cage.application for Hamster Squirrel Guinea pig Chinchilla and other small petstraining and exercise pets, it's good for pets' healthcolour:Random Color, colors cannot be selectedmaterial: plasticsize: diameter about :12.5CMbracket length :13.5CMheight :7.5CMrun wheel width :6CMPackage Contents:2 x Hamster Running WheelOnly the above package content, other products are not included.Note: Light 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.