Stihl FSB-KM Curved Shaft Trimmer Attachment Turn your Stihl KombiMotor into a lightweight, easy-to-use lawn trimmer. This KombiSystem attachment delivers comfort and control in tight quarters. Perfect for those who prefer a curved shaft trimmer. $89.99 Product Your Name (required) Phone Number (required) Email Street Address City State Comments *Reservation subject to availability. Someone from Crescent Avenue Gardens will be in touch shortly to confirm this product is available.