Some of the most common wheels that are considered to be safe for full grown chinchillas are:
Ed Wheel from Chinworld.com
Flying Saucer from Chinworld.com
Flying Saucer from chinchillas.com
Mary Ann Holden Wheel (with solid running surface) from questhavenpets.com
Chin Spin Wheel from Quality Cage
Ed Wheel from Chinworld.com
Flying Saucer from Chinworld.com
Flying Saucer from chinchillas.com
Mary Ann Holden Wheel (with solid running surface) from questhavenpets.com
Chin Spin Wheel from Quality Cage