Kaytee Comfort WheelThe Kaytee Comfort Wheel features a safe, solid running surface, quiet operation and a "tail safe" design, allowing pets 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. Can be free standing or attach directly to any wire cage Encourages healthy exercise TIP: To keep your Comfort Wheel running quiet, place a few drops of