Black Cushioned Boards are a nail care staple. These high-quality, professional files are double-sided with a coarse grit on one side and a medium grit on the other. Their cushioned, foam core provides flexibility and improves comfort.  Excellent for natural nails, artificial nails and toenails, the cushioned boards are long-lasting and make quick work of shortening nails and smoothing the edges. A real bargain in this two-board package.