INSTANT Nail File Black (80/80 Grit) 50/Pack SPECIFICATIONS Grit: 80/80 (Coarse/Coarse) Package contains: 50 files Size: Length: 7", Width: 0.75" Shape: Standard Made in USA DESCRIPTION Instant's line of professional cushion files are made with the finest quality material to achieve the best results in shaping and contouring of natural and acrylic nails for all manicure and pedicure services. What does the grit number of files mean? The grit of files is a rating of the size of abrasive materials on the file. The higher the grit number is equivalent to a finer abrasive, which creates smoother surface finishes. Lower grit numbers represent coarser abrasives that scrape off materials much quicker. Type Grit Super Fine 240 Very Fine 180 Fine 150 Medium 100 Coarse 80