The TriLink Saw Chain 5/32 in. Saw Chain Sharpening File and Guide fits all 3/8 in. LP pitch chains. The precision spiral cut design of this saw chain sharpening file provides clean, fast sharpening without scoring the cutter surfaces. The chromed file guide included with this saw chain sharpening file enables the user to sharpen the chain at the correct angle for optimum cutting performance. The thumbscrew enables the user to securely mount the file to the guide without movement during use. The saw chain sharpening file even has a contoured handle with angle guides for easy, precise sharpening. Get the job done right with this saw chain sharpening file!