Callous grinder
Suffer from severe heel cracking and generally trashed feet.  We've tried many different devices and this is the best so far to remove the hard callouses and smooth out the rough spots.  Having said that, it still (IMO) could be more heavy duty (but you'd probably run into some kind of liability issues, sad).  It does it's job well and wit the wide selection of heads is customizable to you needs
Rating: 4 stars