This is Stihl's PolyCut 7-3 Plastic 3-Blade Trimmer Head is a multi-purpose cutting tool with three thermoplastic blades that are ideal for hard-to-reach places and large areas of high-growing grass. This unit comes with three moving plastic knives for improved cutting performance and results.The blades are mounted on bushings and extend when the engine is brought up to operating speed. The orange thermoplastic blades are also ideal for trimming around monuments and other solid objects as they don’t mark the stone. It is suitable for STIHL models FS38 FS40 FS45 FS46 FS50 FS50C-E.
