YSP1237 Features: * Exercise wheel * Each wheel is covered in extra-durable, powder-coated surface * Made with durable wire * Easy to wash as well as rust resistant * Run-around wheels feature super pet"s unique "tail-safe" and "E-Z" exit design * Encourage healthy exercise * For hamsters, gerbils or other small animals * Diameter: 8" Options: * Available in assorted colors Dimensions: * Dimensions: 5" H x 9.87" W x 8.5" D