I've used it, but not very often. Product Description: ・Glass nail file. It files surprisingly smoothly. ・Set of 2: a hard (large) file for rough filing and a soft (small) file for smooth filing. ・Made of reinforced glass, so it's strong and resistant to breaking. Even if it breaks, it's designed to not become sharp. ・Double-sided file, easy to use, and can be washed with water or sterilized with boiling water, keeping it clean. ・Recommended for those who are not good at using nail clippers. Experience the surprising smoothness! #dog cat #nail care