Material: High-Quality Emery Board Color: Grey Purple Design: Semicircle Shape & Double Sides Size and Quantity: 100/150 Grit, pack of 25 100/150 Grits Nail File different grit different usage 100 grit is ideal to file and rough up the hard toe nails and acrylic nail 150 grit nail file for acrylic smoothes up your nail edge Our nail file ideal for poly extension gel nail and artificial nails, work quickly to trim or shape the acrylic nail with your desired shape or length, making your nails more beautiful. nail files are suit for professional and personal applicationalso you can sent the nail file as gift to your friends or family who love nail art