HANDY HARD CASE - Protective hard case is ideal for storing your file in your purse or bag, keep your file close by & always be prepared for emergency nail snags & accidental chips & breaks. DURABLE premium Czech ‘Bohemian’ glass, tempered (toughened) to ensure the glass is strong, wear-resistant & retains the integrity of the filing surface after multiple uses. They do not corrode, rust or deteriorate like other files. NEVER GO BACK to harmful nail files that tear, shred & damage the keratin layers of your nails. Czech glass files seal the keratin layers together at the nail's edge, leaving nails smooth & healthy, with no jagged edges. Flaunt an impeccable manicure at all times. FEELS FANTASTIC on your nails! Unlike other files, they file in both directions. Expertly shape nails with comfort, ease & efficiency. A smooth & gentle filing experience with zero irritating scraping sensation. YOUR NAIL HEALTH IN YOUR HANDS - Regular, long-term use of crystal nail files strengthens & hardens finger nails, reducing nail splitting, chipping & peeling, allowing you to grow long, healthy, beautiful nails!.