Special features The STIHL PolyCut 28-2 mowing head is equipped with two robust plastic blades that require significantly less energy to mow than a mowing line. This means you can use your cordless brushcutter much longer per charge. For petrol brushcutters, the use of plastic blades leads to lower fuel consumption. Six spare plastic blades are also included with the mowing head. In addition to the plastic blades, you can also use the STIHL PolyCut 28-2 with a mowing line, for example, to work along curbs or other obstacles. Mowing lines with a diameter of 2.4 mm or 2.7 mm are compatible with the mowing head. With the STIHL PolyCut 28-2 and its plastic blades, you are perfectly equipped to efficiently and carefully mow thick grass with your string trimmer or brushcutter. Moreover, you can easily replace the STIHL plastic blades. Simply use the locking pin supplied with your string trimmer or brushcutter. This allows you to lock the shaft, then rotate the mowing head and change the blades. Optionally, you can mount a protective plate on your STIHL PolyCut to reduce wear and increase the mowing height. The STIHL PolyCut 28-2 mowing head is compatible with the following STIHL brushcutters: Petrol brushcutters: STIHL FS 89 STIHL FS 91 to STIHL FS 131 STIHL FS 240 STIHL FR 131 Cordless brushcutters: STIHL FSA 90 STIHL FSA 130 STIHL FSA 135 CombiSystem: All STIHL KM equipped with STIHL FS-KM STIHL KMA 130 R and STIHL KMA 135 R (both with STIHL FS-KM)