I found this in a glass work shop at Yokohama Red Brick Warehouse in Yokohama city.

The material is a glass. The touch of the file part is very very fine so the nail had a very greasy finish.You can wash it with water so you keep it sanitary conditions.

I use it for the delicate arrange and the finish process after clipping my nails.It is also very important goods for me.

It is made in the Czech Republic.