Wire-Reinforced Five-Edge Line 2.7 mm × 100 m
A 2.7 mm five-edge trimmer line with a wire core for break resistance, on a 100 m spool — for mid-size petrol trimmers on rough grass and weeds.
In short:This 2.7 mm × 100 m trimmer line has a five-edged profile and, according to the listing, a wire core to make it stronger and more break-resistant; it is also sold in 2.0, 2.4 and 3.0 mm. Five edges cut grass and weeds cleanly, and 2.7 mm suits mid-size petrol trimmers. Because broken pieces can contain metal, check that your head's maker allows reinforced line and keep bystanders well back.
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Pros
- Five edges cut more cleanly than round line
- Reinforced core resists snapping in rough grass
- 100 m spool lasts a good while
Cons
- Broken pieces may contain metal — a thrown-object hazard
- Not every head maker approves reinforced line
- Amazon.co.uk listing unavailable in October 2026
What it is
The listing behind this page is a 2.7 mm, 100 m trimmer line with a five-edged profile and, in the seller’s words, an integrated wire inside the line for strength and break resistance. It’s also offered in 2.0, 2.4 and 3.0 mm. When we checked in October 2026 the Amazon.co.uk listing showed as unavailable.
Should you use reinforced line?
Edged lines cut grass and weed stems more cleanly than round line, and a reinforced core reduces breakage on tough growth. But think about what happens when a piece does break off at several thousand rpm: if it contains metal, it’s a more dangerous projectile than plain nylon. Check your trimmer head’s instructions — some makers only approve plain nylon — keep everyone at least 15 m away, and wear a visor and eye protection. Never replace line with actual wire or cable.
Will it fit?
2.7 mm suits most mid-size petrol trimmers and heads rated up to 3.0 mm. It’s too thick for small cordless and electric trimmers. Check the maximum diameter on your head or spool — our line size guide explains how.
Alternatives
If your line keeps breaking, the cause is often technique or a worn eyelet rather than the line — see why brush cutter line keeps breaking. Plain nylon options are compared in the best brush cutter line, including Oregon’s Duoline Plus 2.7 mm.
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