1.[Buy Bulk]10 Pieces black straight nail files emery board per pack. These nail files easily help to trim and shape the nail with your desired shape or length. 2.[Double sided]100/180 Grit allows filing your nails with a lighter touch without damaging the nail.Designed with round top & Double Sides, Sandpaper on surface, foam in middle-level. 3.[Washable and reusable]: Quick & Easy to clean by water, could be used many times.file and rough up the hard fingernails and toe nails in 100 grit, and use 180 grit smooths up your nail edge with refined shape 4.[Premium Quality Materials]- Nail Files made of top quality adhesive tape and emery board material, trimming and shaping your nails for a desired shape or length without damaging the nail. 5.[Feature]:Must have in professional nail salons and DIY nail art at home, suitable for girls or women who like nail art fit for girls or women who like nail art.