Please note: This replacement spool is only suitable for the FSA 57 Battery Trimmer with AutoCut C3-2 trimmer head!
Please check the serial number of your device: All FSA 57 with serial numbers starting with "5" will be compatible with Autocut C3-2 trimmer heads. All FSA 57 with serial numbers starting with "9" are not compatible with this spool.
By inserting the spool into the trimmer head, the nylon line is automatically extended on the ground by striking the head and has a simple nylon line loading feature