STIHL FSB-KM Curved Shaft Trimmer Attachment s your STIHL KombiMotor into a lightweight and user-friendly lawn trimmer. Featuring the AutoCut® C 6-2 EasySpool™, this attachment easier line reloading for enhanced convenience. Equipped with an 8mm arbor shaft thread, the FSB-KM allows for compatibility with a wider range of optional cutting attachments. for tight spaces and users who prefer the comfort and control of a curved shaft trimmer, this attachment is an essential addition to the STIHL KombiSystem, providing versatility and efficiency for various trimming tasks. Model Number: FSB-KM