25 Pcs of 100180 grit nail file doublesided file used for natural nails acrylics or gels Strong Manicure Pedicure Tools for Shaping Smoothing Buffing 100 grit coarse side Best for shaping artificial nails acrylics gels or shortening thick natural nails quickly 180 grit fine side Ideal for refining edges smoothing natural nails and finishing touches Comfortable to hold for precise control and easy to clean after use Durable Reusablehighquality abrasive grit wont shed midfiling Tips File in one direction not sawing back and forth to prevent peeling