The Mini 3 nail file has the same diamond grit as the file # 3 Flexible file - Coarse.
This diamond nail file is designed for thick natural nails, men’s nails, toenails and sculptured nails.
You can file back and forth without damaging the nails.
Size of the Mini 3 nail file in cm: 15.4 x 1.3 in inches: 6 x 0.511