3 Best Strimmer Lines of 2025

The Oregon Flexiblade Trimmer Line (110 m) has a serrated edge, like a saw, which makes it a viable opponent for thick weeds and brambles.

One spool holds 110 m of line, which should last a year or more depending on how frequently it is used. The line itself is 4 mm wide, with sharpened square edges that are intended to slice through vegetation.

It’s designed to be used with the Oregon Jet-Fit strimmer head, and can fit into either the two-line or four-line model. The line’s unusual shape and profile makes it unsuitable for the majority of standard heads.

Customers have reported being able to use this line all over rough farmland; however, care must be taken not to make contact with any rocks, fences or metalwork. Due to the thickness of the plastic, it can be a little brittle which can cause breakages if the line hits hard materials. Doubling the line can help prevent this from happening

Although relatively expensive, it seems to offer reasonable value for money considering the effects it can achieve, and it’s one of the best strimmer lines for brambles thanks to its serrated, sharp edge.

This Oregon Flexiblade Trimmer Line (21 m) is the same product as the 110 m option featured on this page; however, it’s a smaller spool and holds 21 m of line. The thickness of the line remains the same, at 4 mm.

There are other lengths of this Flexiblade Trimmer Line available, with wider and narrower options to choose from as well. The thicknesses available are 2.5 mm, 2.65 mm, 3 mm, 3.5 mm and 4 mm.

Customers report than the 4 mm line can be used to cut brambles up to 1.2 cm in diameter. The narrower 2.65 mm, 3 mm and 3.5 mm lines will also clear brambles if a slow and measured approach is used.

Nevertheless, it is not strong enough to completely put your main brushcutter tool into retirement. Smaller brambles are the limit for the Flexiblade line, and trying to clear larger material will result in the line snapping. Due to its thickness, the wider line can be a little more brittle than the smaller lines.

Flexiblade Trimmer Line has a sharp square edge which is serrated to help with cutting through vegetation like a saw. The lines are designed to be used with Oregon’s Jet-Fit, and not all standard heads will fit such wide line.

Overall, it’s one of the best strimmer lines for brambles if you want to try a thicker option, or a range of diameters, but don’t want too much spare.

Made from a combination of two different materials, the Oregon Duoline (120 m) is designed to be both flexible and durable.

The ‘duo’ aspect refers to the anti-weld surface which has been combined with a carbon-loaded core. There are a few different widths and lengths available: 120 metres of line 3 mm thick, 140 metres of line 2.7 mm thick or 180 metres of line 2.4 mm thick.

Unlike Oregon’s Flexiblade line, the Duoline is round with no sharp edges. It’s suitable for tackling thick weeds, grass and undergrowth.

Although the line may snap if it comes into contact with hard surfaces, for the most part it is durable and long lasting.

If you have been going through thin line quickly in the garden, you may benefit from using a thicker option like this as it can help use less product. Because of this, the Duoline is one of the best strimmer lines for brambles and thick weeds if you’re after value for money.