Mani + Cure Smooth & Shape Professional Grade Double-Sided to Shape + Smooth Nails Strong, Flexible Durable 3 Convenient Sizes True to Life Not Tested on Animals Environmental Caring Each emery board has 2 sides to shape and smooth the nails. The coarse side shapes nails while the fine side smoothes and finishes. To use, hold the emery board at a slight angle just under the nail. Beginning with the coarse side of the board, start on one side of the nail tip and work toward the center. The file the other side of the nail in the some direction. To prevent splitting, file only in one direction. After shaping the nail as desired, use the fine side of the board in the same way to smooth and finish the details. Make sure to replace the file when worn. Contains a total of 15 Emery Boards [3 sizes, 5 pieces each size].