The PFERD 9301362 Chain Sharpener CS-X is an innovative tool designed for manual sharpening of saw chains. This genuine PFERD sharpener features a 4.8mm (3/16 inch) file diameter, suitable for various chain saw applications. Its ergonomic design ensures precise and consistent sharpening angles, extending the life and performance of saw chains. The CS-X system allows for simultaneous sharpening of the cutting tooth and adjustment of the depth gauge, providing a professional finish. Ideal for maintaining sharp, efficient saw chains for forestry and landscaping tasks.