The trimmer line is almost always made of nylon which is a polyamide. In fact, it is often simply referred to as 'nylon line'. However, high-performance materials can be added to this material for greater durability, flexibility, and wear resistance.
The string trimmer line comes in three diameters or weights:
- Light: 0.065- to 0.080-inch line is best for trimming grass around the house and whacking down common lawn weeds from around driveways, walkways, and fences.
- Medium: 0.080 to 0.110-inch line is best for homes with larger lawns, or gardens overgrown with weeds that have tough, heavy stems.
- Heavy: 0.110-inch and above. Professional landscapers pull this out for big jobs - large lots; commercial spaces; or lawns and gardens with thick grass, woody shrubs, and dense underbrush.
| Product Name |
Nylon String Grass Trimmer Line 3mm Spool Packing For Lawn Mower |
| Material |
100% nylon |
| Diameter |
1.6-4.0mm |
| Shape |
Round, Square, Twist, Star, Saw Tooth |
| Color |
Customized |
| Packing |
Card head, Blister, Hank, Pre-cut, Spool |
| Grade |
Commercial, Economical, Professional |
String Trimmer Line Shapes
Depending on what you are trimming or cutting, the shape or style string line is as important as the diameter.
- Round trimmer line works best for home/residential use. The basic shape doesn't wear or break as easily as other styles, making it more durable for use near concrete, trees, and fences. Round line is usually the easiest to replace and has a longer life than other styles. However, the round line lacks a cutting edge and rips grass instead of cutting it.
- The twisted trimmer line has a better cutting edge and is stronger than the round line. Normally used to cut back thick, heavy weeds, this trimmer line delivers clean cuts while reducing trimmer vibrations and noise levels. The added strength also helps decrease line wear and breakage when hitting hard surfaces.
- The squared trimmer line offers four sharp edges that cut through grass rather than ripping. With this extra cutting power, the square trimmer line cuts through thicker weeds more easily and works well on modest-to-heavy, thick, overgrown vegetation and undergrowth.
- Multi-sided (AKA star-shaped) trimmer line has multiple edges that quickly and efficiently cut through heavier grass and thicker weeds. However, it breaks more easily when striking rocks, stones, concrete, and fences.
- A serrated trimmer line works just like a serrated knife. It easily saws through heavy weeds and grass, leaving a clean cut while reducing your work time.
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