<b>Exfoliation material</b><br>Foot files use a variety of materials to slough off dead skin. <br>Our feet are susceptible to issues like dry skin, calluses, and cracked heels. Weather changes, not wearing socks, wearing shoes that are too big or too tight can all cause irritation that leads to hardened and rough skin. <br><b>Abrasive paper changeable</b><br>After constantly using of your foot file for some times, you will feel the abrasive paper become smoothing and less effect. Don’t hurry to buy a new one, you can change the abrasive paper by yourself and give the foot file a second live. We warmly offer you totally 12 pieces of spare abrasive papers (6 pcs coarse，6 pcs fine). <br>How do you replace the useless abrasive paper<br>All the spare paper had already got adhesive on their back. First, tear up the old paper from the foot file slowly. Second, take off the release paper. Third, stick the new abrsive on the same place. Now, you can use the foot file as good as before. <br><b>#80/#150 grit</b><br>The smaller mesh number ,the coarser sandpaper<br>Most of the abrasive paper grit on the market is 150/200,we strictly select the abrasive paper grit 80/150,so no matter your cocoons is thick or thin it can be easily remove calluses or be gently treated. <br>#80 grit is black<br>#150 grit is yellow<br>