Glass nail file

[1] The special procedure of thermal hardening resulted in advantages such as excellent shock-proofness and an extremely durable polishing surface.

It had a fine-grained steady abrasive surface created by etching in a solution of acids, which allowed grinding nails without any pain or damaging the fingernail structure.

[citation needed] Nail files which are made of tempered glass can withstand falls onto the floor and intensive daily use.

Mild care: Due to the granular surface the glass nail file doesn't injure fingernails during manicure, grinding them softly and smoothly.

Unique wear resistance: the granular surface of a glass nail file isn't erased even if used for several years.