[Specifications] Replaces Autocut C26-2 cutting head. Cutting line diameter: maximum 2.7mm (0.105 inches). [Applicable to] STIHL, FS240, FS250 brush cutter head; FR 410, FR 450; FS-KM 130 and above; High efficiency: When mowing, simply press the C26-2 head and the nylon thread will automatically adjust to improve mowing efficiency. of your gardening. Direct use: supplied with pre-installed nylon thread and can be used anywhere. directly. It can be replaced by inserting directly into the cutting line, no disassembly is required. 【Practical application】 Ideal for various lawn mowing jobs. With the practical double thread cutting head for the STIHL brush cutter, you can effortlessly clean corners and edges of your lawn.