- PFERD 17077 round files designed for manual sharpening of chainsaw chains - Pack of 6 units, diameter 13/64" (5.2 mm), length 8" (20.3 cm), chain pitch 3/8" - Premium spiral cut provides maximum sharpness and fine finish on the teeth - Fast and precise sharpening, without overheating or excessive material wear - Compatible with EDP 17045 and 17046 handles for greater comfort - Suitable for steels up to 370 HV (38 HRC), ideal for professional and home use - Long durability and consistent performance with every sharpening - Recommended for those seeking professional results and smooth filing