Nail File with Prime Quality: Our nail files are made with top quality raw material from South Korea, designed with square shape and double sides, these nice, sturdy & thick nail files provide you a comfortable nail doing experience | 180/240 Grit Nail File: Different grit has different function, the higher grit it has, the finer the surface it gets and will be more suitable for soft nails. 180 grit nail file is good for smooth to mild filing and smoothing up your nail edge, 240 grit nail file is gentle for natural nails and wrap services, fine gravel, polished slightly slower, more delicate. | Nail Files Double Sides: BLESWIN nail files which are double sided, with size 7.1 * 1.1 * 0.18 inch, special rectangle shaped nail files are durable for reusable after washing, you can quickly trim and shape the nails with light touch, time-saving. | Corresponding Function 180/240 Grit: 180 grit nail file is good for smooth to mild filing and smoothing up your nail edge, 240 grit side is gentle for natural nails and wrap services, fine gravel, polished slightly slower, more delicate. | Heavy Duty Nail File: Nail file is though enough that the thickness up to 4mm, it is great to prevent bending and fracture, three layer premium quality material makes it more flexible when use. | For false nails, artificial nail, acrylic nail, please choose 60/60, 80/80 or 100/100 grit, for natural nails, you can get 100/180 or 180/240 grit directly