Pretty good but plan to spend some time using!
Works but takes time!<br />The instructions say to use just for a few seconds .......  it takes a seriously longer period of time<br />to actually remove calloused skin.<br />Use something to protect your floors as it produces a powdery layer of skin flakes.<br />It is physically easier to use than a manual microplane device and leaves a smoother  surface.<br />Not perfect but you will loose some calloused skin.
Rating: 4 stars