glass fingernail files
 
Glass Fingernail Files (better than emery boards)
Glass nail files never wear out.
Can be used on both natural and artificial nails.
Glass nail files are allowed in carry-on baggage on airlines.
Regular use of a glass nail file reduces chipping, peeling and splitting of nails.
Unlike emery boards, glass nail files can be repeatedly washed, boiled, and/or sterilized (isopropyl alcohol is recommended); you may even run them through a dishwasher. The files are hardened, tempered glass, which makes them highly resistant to impact; and should one break, the edges will be blunt instead of sharp. Comes with plastic case (shown).