Super pet"s giant comfort wheel is perfectly sized for cruising chinchillas or physically fit pet rats. The giant comfort wheel also provides a fun fitness experience for guinea pigs and ferrets. The comfort wheel features a safe, solid running surface, quiet operation and a tail-safe design, allowing pets an easy entrance and exit. Every comfort wheel comes with a heavy duty wire stand and a 2-way attachment clip, so the wheel can be used either free-standing or clipped to a wire cage. Available in four assorted colors.