This razor has two cutting strips and a lubricating strip. As you increase the magnification, the sequence of images zooms into the cutting edge.

The razor has never been used and still has scraps of metal from the sharpening process near to the cutting edge.

Try and estimate the width of the cutting edge of the blade, and then compare it with a human hair. You should also compare the blade with an old blade, which has been used for several weeks until it became blunt.