Hamster Treadmill Running Wheel

specification:
Rounded corner design can prevent accidental injury.
Made of plastic, beautiful and beautiful. 
Super silent, hamsters play at night without affecting the owner's sleep.
No need to worry about the potential safety hazards of hamsters.
Suitable for hamsters, guinea pigs, ground squirrels, etc.
material: plastic
Function: fun, exercise wheel, play with toys
Diameter: 12cm / 4.72"