With the best electronic foot file, you will have a super easy time keeping your feet in shape. It is an innovative callus-removal pedicure tool that will spare you the hassle of going to the salon regularly in the name of having the callus on your feet buffed away.Most of them are equipped with roller heads that spin 360 degrees to remove hard, dry, rough, dead, and callused skin effectively, professionally, and, above all, safely.