Sankyo File 80/80 50Pack (Zebra)

Manufactured in the US
Light weight. 
Re-useable (washable). 

Nail file grit guide: 
80/80 - very sharp and rough, used for removing outer gel or acrylic overlays. Not recommended on natural nails. 
100/100 - medium sharp and rough, used for preparing nail plate before applying gel or acrylic and for shaping artificial nails. 
180/180 - less sharp and rough, for finishing off filing artificial nails. Recommended on natural nails. 
240/240 - soft filing. Recommended on natural nails.