STIHL C3-2 Spool, 3-Pack is designed specifically as a spool for the Stihl FSA 57 Trimmer equipped with the C3-2 Trimmer Head. This pack of three spools ensures you have reliable and convenient s on hand to keep your trimmer running smoothly and efficiently. for maintaining the performance and longevity of your outdoor power equipment, these spools are easy to install and made to meet STIHL’s high standards of quality and durability. Keep your lawn looking its with this essential part. Model Number: 4009 710 4306