Compatible with many popular STIHL trimmer models, including FS38, FS40 (since 2008), and FS45, this replacement part seamlessly upgrades older equipment. The gear-driven blades are constructed from high-quality materials offering excellent wear resistance for extended service life and efficient cutting performance. Featuring a 11 cm blade length and 3.5 mm thickness, it enables precise trimming across both large and small garden areas. Lightweight at only 250 grams, the included cutter head is easy to assemble and use, making it ideal for both professional landscapers and home users. Designed for stability and reliable operation, it is well suited for trimming lawns, shrubs, and other garden vegetation.