1: Fine Grid,400. 2: Ultrafine Grid 600. 3: No Grid The Buffing Trio is a polishing file, specially designed to create a high gloss on the natural nail. First black then white and then gray.Easy to remember:Black White Gray makes!Three in one file....
There are 3 different boxes in assortment. Each box has three different character forms. For each form again in three sizes - Thin, Natural and Thick per box so 3 x 3 = 9 forms.