General description Replacement cutting head for Stihl Autocut, designed for efficient mowing and trimming. This head features a special dual-line design that allows for automatic nylon line adjustment when placed on the ground, ensuring optimal performance even on tough weeds. Technical specifications OEM number: 4002 710 2137 Compatible line diameter: 2.4 mm Compatibility and accessories Compatible with Stihl Autocut models: FS 55, FS 56, FS 70, FS 94, FS 91, FS 111, FS 131, FS 240, FS 90, FS 130, FR 131, FR 460 Usage Can be used for both mowing and trimming tasks. Easy to install and operate, providing high efficiency and durability.