General description The AlwaysH Trimmer Head is designed for use with various Stihl and Viking trimmers, providing a reliable and efficient cutting solution. This thread head is compatible with models such as FS38, FS40, FS45, FS50, FSE60, FSE71, and FSE81, as well as Viking TE600, TE700, and TE1000. It replaces the part number 4006 710 2105. Technical specifications Thread: M8 x 1.25 Compatible RPM: Up to 10,000 rpm Compatibility and accessories Compatible with Stihl models: FS38, FS40, FS45, FS50, FS50 C-E, FSE60, FSE71, FSE81 Compatible with Viking models: TE600, TE700, TE1000 Replaces part number: 4006 710 2105 Usage This trimmer head is ideal for maintaining lawns and gardens, providing a clean and precise cut. It is suitable for both residential and professional use.