Stihl FS 38 Curved Shaft Trimmer, 27.2cc EngineStihl FS 38 Curved Shaft Trimmer, 27. 2cc Engine The STIHL FS 38 Grass Trimmer is ideal for homeowners looking for a great value. High cutting speeds and a 15" cutting width trim time off landscaping chores by providing excellent cutting performance. Its lightweight design just 9. 3 pounds! along with an ergonomic loop handle, curved shaft and low vibration provide operator comfort as well as exceptional handling and maneuverability around landscaping