Product Description ------------------- LEIGHTON DENNY duo file twin pack for strong nails is a professional-sized, double-sided nail file. Fine surface filler especially suited for use on soft, weak and brittle nails. Ideal for both fingers and toes, natural and artificial nails. Perfect for an emergency nail file. Keep it in your handbag for an easy and quick way to smooth away hooks and help prevent breakage. Directions ---------- Always file nails from the side of the nail towards the centre. Never saw backward and forwards as this can cause damage.