File that smoothes the unevenness of the nail surface Description of item The yellowing is removed and the wrinkles and irregularities due to the aging of the nails are smoothed. It can also be used to make a base before gel nails. How to use Step1 Use a rough pink surface (150 grit) to eliminate unevenness on the nail surface. Step2 Finish smoothly with a fine white surface (320 grit). * What is a grit? The larger the number, the finer the file. How to use Step1 Use a rough pink surface (150 grit) to eliminate unevenness on the nail surface. Step2 Finish smoothly with a fine white surface (320 grit).* What is a grit? The larger the number, the finer the file. Precautions for use ● Do not use for any purpose other than sanding the surface of your nails. ● Do not use if you have an abnormality on your nails. ● Please use it for your own nails and artificial nails after removing the nail polish. ● Be careful not to scrape the surface too much. ● Keep out of reach of children.