This Spool with Nylon Line is a genuine Stihl replacement for the AutoCut C 3-2 cutting head used on the FSE 52 and FSA 57 trimmers. The spool body is made from a tough, impact-resistant polymer and is pre-wound with durable nylon line for clean, consistent cutting. It is designed to match the original part for accurate fit, smooth line feed, and proper balance, helping your trimmer run efficiently with minimal vibration. Suitable for both corded and battery-powered machines, it is ideal for routine garden maintenance and light landscaping. Fitting is straightforward and user-friendly, making it practical for tradespeople and home users alike.