The STIHL PolyCut 28-2 mowing head is equipped with two robust plastic blades that require significantly less energy for grass cutting compared to a mowing line. This allows you to work much longer on a single battery charge with your battery-powered brushcutter. For gasoline-powered brushcutters, the use of plastic blades results in lower fuel consumption. The package also includes six additional plastic blades as replacements. In addition to using plastic blades, you can also use a mowing line in the STIHL PolyCut 28-2 head, for example, for work along curbs or other obstacles. Mowing lines with diameters of 2.4 mm or 2.7 mm are compatible. With the STIHL PolyCut 28-2 featuring plastic blades, you are optimally equipped to effectively and thoroughly mow dense grass with your brushcutter. The STIHL plastic blades can be easily replaced. You only need the supplied adapter that comes with your brushcutter. This allows you to block the shaft, unscrew the mowing head, and change the blades. Optionally, you can add a protective plate to your STIHL PolyCut, which reduces wear and increases the cutting height. The STIHL PolyCut 28-2 mowing head is compatible with the following STIHL brushcutters and clearing saws: Gasoline brushcutters: STIHL FS 56 to STIHL FS 89, STIHL FS 91 to STIHL FS 131, STIHL FS 240, STIHL FR 131; Battery brushcutters: STIHL FSA 130, STIHL FSA 135; KombiSystem: all STIHL KM with STIHL FS-KM, STIHL KMA 130 R, and STIHL KMA 135 R (both with STIHL FS-KM). Note: Mowing heads should only be used with a special mowing guard or a STIHL universal guard for mowing heads and metal tools.