3pcs FSA 57 Trimmer Head Spools for Stihl Autocut C3-2 FSA 57 FSE 52 FSA57 FSE52 Weed Eater Replacement Parts Include: 4009 710 4305

This professional replacement trimmer spool is precision-engineered for reliable performance and easy installation. Built with high-strength wear-resistant nylon line and rugged ABS construction, it delivers excellent durability, reduces fraying and breakage, and maintains stable cutting efficiency during extended use. Designed with a user-friendly tap-to-advance system, the line extends smoothly and efficiently with a simple tap on the ground, eliminating tedious manual adjustments and saving time on the job. The standard M8 x 1.25 left-hand thread ensures a secure and precise fit, while the balanced structure minimizes vibration for more comfortable operation. Pre-wound and ready to install, this replacement part offers hassle-free setup without complicated tools or disassembly. It serves as an ideal high-performance alternative for routine lawn and garden trimming, helping you keep edges, fences and landscaping neat and well-maintained with less downtime.

• Wide Compatibility & Important Note This replacement spool is only suitable for FSA 57 battery trimmers equipped with C3-2 trimmer heads. For FSA 57 models, units with serial numbers starting with "5" are compatible, while those starting with "9" are not compatible. Also fits FSA30, FSA50 and FSE 52 (2020 and newer models).
• Standard Specification & Perfect Match Replaces OEM part numbers 4009 710 4305, 4009 710 4306, 4009 710 2106, 4009 710 2100 and 4009 710 2103. Features M8 x 1.25 left-hand thread mounting size and works with 2.0mm / 0.080" diameter trimmer line.
• Premium Material & Durable Structure Pre-wound with high-strength nylon line and constructed with durable ABS material. Wear-resistant and break-resistant design ensures stable performance during long-time trimming work.
• Easy to Use & Time-Saving Design Features user-friendly tap-to-advance operation for quick line extension. Simple installation and refilling can be finished in short time without disassembling the whole head, bringing convenient using experience.
• Ideal Replacement & Package Includes Comes as a practical value pack to meet long-term replacement needs. Perfectly balanced structure reduces vibration, making it an ideal replacement part for daily lawn and garden trimming maintenance.