Nail file strips are double-sided on six sides

▸ Structural design: six-sided polishing file/double-sided polishing surface
▸ Material composition: quartz sand + glass fiber substrate
▸ Specifications: 150×20×5mm
▸ Particle size standard: 400 mesh/600 mesh
double-sided configuration▸ Process characteristics: coarse grinding + fine polishing two-stage treatment