PRECISE SHARPENING MADE EASY - 2-in-1 file kit for accurate and consistent sharpening results on chainsaw chains. COLOR CODED FILE - Facilitates quick identification of the matching chain for maximum efficiency at work. OPTIMAL ANGLE CONTROL - 30° markings on the guide rails support the correct filing angle for perfect cutting performance. INTUITIVE APPLICATION - Self-explanatory icons on the handle show the correct filing direction for left and right cutting teeth. Quick Maintenance & Convenient Storage - Easy file change by opening the cover as well as built-in hanging hole for tidy storage., Manufacturer: Husqvarna AB