200x glass nail files durable crystal file nail buffer nail care 5.5" /14cm colorful nf014

the color of the file can resists more than 300 c(572 f), so unless you want to test it in laboratory conditions, you can be sure off that nothing will happen to it. the surface of the glass nail files has a lifetime guaranty too, so with careful use after years of using on daily basis your glass nail file will be good size:5.5" /14cm package:100pcs/lot