Nail File (20 Pcs), Emery Board Nail Files for Acrylic and Natural Nails, 100/180 Grit Double Sided Emery Boards for Nails Fingernail Filer Bulk for Professional Finger Nail Filer Manicure Set 100/180 GRIT TWO SIDED NAIL FILES: The coarse side of 100 grit is excellent choice for artificial nails, used to shape and buff acrylic and fake nails and thick toenail; The fine side of 180 Grit is in medium coarseness, excellent for shaping natural nail edge and refine shapes, and to prepare natural nail ready for applying any gel nail product on it; and HANDY AND PORTABLE SIZE: The 7.1 inches length of emery board nail filers is just right size for holding, neither too big nor too small; it is in your palm of hand to file and trim, or to put it in your purse and take it on the go for traveling; the round top is much easier for trimming, buffing and shaping; and MULTIPLE USEGES: they are a must-have in nail salons and professional nail supplies for nail tech, as well as daily nail care and art at home; these nail files can be widely used for all kinds of different nails and situations, for example, natural nails, acrylic, poly gel, hard gel, dip power nails, and even for your pet cats/dogs nail trimming and grooming; you can also buy it to treat yourself, or just wrap them as a gift for friends; and