General description Replacement C6-2 trimmer head 4006-710-2126 is designed for use with various Stihl brush cutters, making it an ideal choice for mowing lawns, trimming around trees, and maintaining areas between shrubs, walls, and fences. Technical specifications Model: C6-2 Part number: 4006-710-2126 Compatibility and accessories Compatible models: STIHL FSE60, FSE71, FSE81, FS38, FS40 (from 2008), FS45, FS46, FS50 Installation Insert the line into the eyelet and turn the knob for easier loading.