[Specifications] Replaces the Autocut C26-2 cutting head. Cutting line diameter: maximum 2.7 mm (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 line will automatically adjust to improve the mowing efficiency of your gardening. Direct use: Supplied with pre-installed nylon line and can be used anywhere. It can be replaced directly by inserting it directly into the cutting line; no disassembly is required. 【Practical application】 Ideal for various lawn mowing tasks. With the practical double-line cutting head for the STIHL brush cutter, you can effortlessly clean the corners and edges of your lawn.