Nailwood file

Since the nail file is made of wood, it is very sturdy, so there is no need to worry about it breaking unless you apply excessive force. It is also convenient because it can be used on both sides without distinction. It is an affordable product from Daiso, and with a total of 4 pieces (2 black and 2 brown), there is plenty of material. I have been using it for a long time now. It seems to tidy up my nails very smoothly.