Works Fine For Me But Can Be Costly
My heels were rough and cracked and after just using this twice, they are almost like new. The balls of my feet were very hard but are softening up.  Seeing that I've never had a pedicure, this inexpensive tool is serving its purpose very well.  My only issue is that after using it only twice, I feel it is already needing a battery change and the roller will need to be replaced soon.  The tool is inexpensive but when you start adding in the battery cost and roller replacements it's probably more expensive than others.
Rating: 4 stars