CritterTrail snap-on Wheel (Kaytee)
CritterTrail Snap-On Comfort Wheel Accessory is the space saving silent spinner for small pets. Easily attaches to the outside of the habitat to save precious interior living space. Wheel has a solid surface so it's easy on your pets feet. Waste Collector Cup makes clean-up easy. Comfort Wheel Accessory is 7.8in high 7in long and 4.5in wide.