I ordered this to try and get rid of the build up of hard skin you get next to the ball of your foot (particularly the ladies who wear very high heels a lot!)
Anyway its done the job fantastically! It is a bit addictive though, so be careful not to 'shave' too much off otherwise you will be left with sore bits!
I did have to keep taking the blade off and wiping it though as the skin kept getting stuck in it, but other than that it worked very well.
There is a file attachment but i didnt find this very good which is why i have given 4 stars, but i didnt buy it for that anyway!
I would recommend you give it a go!