Prevue Pet Products introduces its collection of small pet exercise wheels. Whisper Quiet Wheel has a specially engineered ball-bearing device that keeps the wheel whisper-quiet when in use to ensure not squeaking or rattling. It can be used with the stand or removed and fasted to the cage wire. Easily disassembles for cleaning and comes in three sizes: 6 inch, 8 inch and 9 1/2 inch. Whisper Quiet Wheel is perfect for mice, gerbils, hamsters, hedgehogs and guinea pigs.