Works good
I tried a cheap callus shaver from wallyworld and couldn't make a dent with my feet calluses.  This went through them like butter.  The rasp looks and feels real cheap but it works well enough.  It didn't come with ANY extra blades.  Even the  one from wm came with a couple.  Also it doesn't have the feel of a quality tool.  Just throw in a couple blades and I would have given it 5stars.
Rating: 4 stars