The cruelty file 100/180 grit is the most popular among masters for processing natural and artificial nails. The hard side of the file is shaped and cut off the main gel or acrylic. On the side of the 180 grit file, they cut small irregularities and polish the nail plate. The file is very convenient for aligning the angles of the nail plate and working with the material for building at the cuticle. High-quality application of abrasive material provides long service of your nail file.