Emery boards are disposable nail files made from a thin strip of wood or cardboard. On one side of the emery board is the file, composed of fine-grit paper specifically made for nail care. On the other side of the board is an even finer grit layer, made for buffing nails and evening-out jagged edges. Best for fingernails and toenails, browse emery boards and nail files of all kinds, including reusable emery boards and disposable emery boards.