Run-Around Wheels provide free-wheeling fun for your furry friend! The 8in Regular Run-around Wheel is perfectly sized for all hamsters and gerbils. These stylish wire wheels are available in a variety of four fun colors. Each wheel is covered in an extra-durable powder-coated surface making them easy to wash as well as rust resistant. Run-around Wheels feature Kaytee's unique intail-safe in and in E-Z exit design.