Stihl PolyCut 20-3 Head
The PolyCut 20-3 head uses lightweight thermoplastic blades, these are easily changeable and replacement packs of blades are available. It is easy to swap from an AutoCut strimmer head to a PolyCut head. Ideal when strimmer line is wearing too quickly. The 20-3 also has the option of being able to thread a single, tough length of strimmer line through the head to help assist the plastic blades.