Critter Wheels

Comfort Wheels - 3 sizes for small animals
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.
Small Comfort Wheel is perfectly sized for your healthy hamster, motivated mouse, or jogging gerbil. Large Comfort Wheel is perfectly sized for your healthy hamster, jogging gerbil or healthy hedgehog. 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.
Colors: Assorted
Mfg: Pets International

Run A Round Wheels from Super Pets
Extra Durable, Double Coated Epoxy Surface
Fits inside Pet's Home, Hangs on any Wire Home or attaches to any Comfort Shelf.
Complete with E-Z Connect Clips, plus unique Tail-Safe & E-Z Exit design.
Mfg: Pets International
Colors Vary
5.75 and 8 inches - Hamsters Mice, Gerbils, Unusual Pets
11 inches - Unusual Pets, Chinchillas, Guinea Pigs, Pet Rats

Lixit Rolly Exercise Wheel
Wheel for wire cages, solid wheel to prevent injuries to legs and feet.
Stand for glass and plastic cages sold separately.
Mfg: Lixit
For: Hamsters, Mice, Gerbils 
Colors: Vary
Size: 6 inches

Habitrail Exercise Fly Wheel
Fun for your mouse or dwarf hamster! Suspends from the top of your Habitrail Mini or other compatible cage and allows your little pet to get some high-flying exercise! Plastic construction is sturdy and won't squeak like other wheels! Adjustable hanging exercise wheel.
Mfg: Hagen - Habitrail
Size: 6.5 x 1 inches