STIHL uses a custom blend of polymers to provide a line with the best all around characteristics of abrasion resistance, flexibility over time and temperature ranges, and welding resistance.
Colour-coded by size:
- Blue - .065 (1.7mm)
- Green - .080 (2.0mm)
- Orange - .095 (2.4mm)
- Red - .105 (2.7mm)
- Black - .130 (3.3mm)
- .095 - 1 lb Fits models: FS55, 56, 90, 100RX, 110, 250