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Grass trimmer vs brush cutter

Updated: October 2026

You are weighing a grass trimmer against a brush cutter because the back of the plot has brambles, and a listing near about £30 shows a metal disc. Grass trimmer vs brush cutter is a class question, not a hunt for the highest star line. The twelve listings saved on 19 October 2026 are on the [grass trimmer comparison](/hub/lawn-and-garden-equipment/grass-trimmer). This is not a lab test. A qualifying purchase through our links can earn a commission at no extra cost to you. A line trimmer finishes a lawn edge. A brush cutter has a straight shaft, a gearbox and a blade that can take torque. A small disc on a light stick is not that machine.

You are weighing a grass trimmer against a brush cutter because the back of the plot has brambles, and a listing near about £30 shows a metal disc.

Our top picks

Bosch Bosch EasyGrassCut 18V-26

Best overall

Bosch Bosch EasyGrassCut 18V-26
8.1/10about £63
View offer
WORX WORX WG163E

Rank 2

WORX WORX WG163E
8.9/10about £79.99
View offer
Bosch Bosch EasyGrassCut 26

Best value

Bosch Bosch EasyGrassCut 26
8.8/10about £29.94
View offer
On this page
  1. 1.When a grass trimmer is the right tool
  2. 2.When you need a brush cutter
  3. 3.What the blade kits in this set are
  4. 4.Heads you should not add

When a grass trimmer is the right tool

A grass trimmer, which UK shops also call a strimmer, cuts the soft grass a mower misses. Nylon line around 26–30 cm is the pattern on the line tools here, including the corded Bosch EasyGrassCut 26 and the WORX WG163E. Edges, fringe and weeds that are not woody are the job. STIHL's UK guide puts ordinary grass trimmers on a bent shaft without a gearbox. Stay with that class when the mower already does the lawn. Corded, cordless and what is in the box is on the grass trimmer buying guide. If the stems bend under your boot, you have not yet made a case for a brush cutter.

When you need a brush cutter

You need a brush cutter when the growth is woody: brambles, scrub and saplings, not a neat edge beside a path. STIHL describes a straight shaft and a gearbox so a blade can take torque. EGO pairs a blade and a harness with scrub and saplings. Petrol brush cutters are absent from this save, so a battery blade kit is not that machine. If the ground hides wire or ironwork, STIHL says ask a professional. None of the twelve listings publishes a gearbox and a harness.
Bosch Bosch EasyGrassCut 18V-26

Testsieger

Bosch Bosch EasyGrassCut 18V-26
8.1/10about £63
View offer

What the blade kits in this set are

The blade kits here are hand-held trimmers with small heads, often about 6 inches or 15 cm. The battery cell often says 9 V or 12 V while the title says 21 V. That clash does not promote the tool into STIHL's brush-cutter class. A disc without a gearbox and a harness is still a disc on a light shaft. UK reviews also name the limits: a Jwdj guard that drops, Highlandhue blades that snap on paving, and a report of a cut shoe on a short AMX handle. A single success on brambles is not a recommendation. The best grass trimmer page picks line tools for lawn jobs, not these discs.

Heads you should not add

Do not add a linked chain flail, or any head the maker did not specify. The Health and Safety Executive has warned that linked chain flails on brush cutters can fail and throw pieces, and a CE mark on those accessories is not proof they are acceptable. Fitting a saw disc from a cheap kit onto a line trimmer is the same mistake. Use the head the maker supplied, or stop. If a guard falls onto the blade, take the battery off. The stroke sits on how to use a strimmer. When the plot is woody and you cannot see the ground, hire the job.

Common questions

Can a grass trimmer cut brambles?
A nylon line will struggle once the stems are woody, which is the limit EGO and STIHL describe for line tools. One UK review on a small blade kit in this save says brambles were cut. That is one account beside guards that drop, blades that snap, and a head that smoked. It is not evidence that a disc near about £30 is a brush cutter. Thick bramble is the brush-cutter job, or a contractor.
What is the mechanical difference?
STIHL's UK guide separates them by the shaft and the gearbox. Grass trimmers are often a bent shaft with no gearbox, using line. Brush cutters use a straight shaft and a gearbox so a blade can take torque, often with a harness. A metal disc on a light telescopic stick does not create that gearbox. Read the listing for a gearbox before you believe the word farmland in a title.
Are the metal blades in a £30 kit a brush cutter?
No. In this save those kits are about 6 inches or 15 cm, with plastic and metal pieces in the box, and several voltage cells that contradict the 21 V title. Reviewers report short-lived blades and small guards. A brush cutter is a different machine, with a blade and a harness published for woody growth. The kit price is not the classification.
Do I need a harness?
For a brush cutter, yes in the maker guides. EGO pairs the harness with scrub and saplings, because the tool is heavier and the blade stores more energy than a line head. A shoulder strap mentioned on a light multi-blade stick is not the same object. If the listing does not describe a brush-cutter harness and a gearbox, do not invent one from a strap in a bullet.
What about a chain or flail head?
Do not fit one. The HSE has warned against linked chain flails on brush cutters, and a CE mark on the accessory is not approval. The maker's own head is the head you use. If the only way to finish the plot is a head the tool was not sold with, stop and change the plan.
When should a contractor do it?
Call someone when the ground hides wire, rocks or ironwork, or when you cannot see the soil, which is STIHL's own stop. Also call if the growth is woody and you do not have a brush cutter you know how to use. The prices and the twelve rows stay on the main comparison. This page only decides the class.

Related pages

Grass trimmer

Best grass trimmer UK picks for a stated garden job

Grass trimmer buying guide: the lead, battery and box

How to use a strimmer: check, tilt, feed, then stop

Strimmer for lawn edges: wheel, twist or half-moon

Sources

Public UK sources from the research digest. amazon.co.uk prices, stars and review counts on these twelve listings were saved on 19 October 2026.

  1. Electrical Safety First: grass trimmers (retrieved 19 October 2026)
  2. Noise Emission in the Environment by Equipment for use Outdoors Regulations 2001 (retrieved 19 October 2026)
  3. Supply of Machinery (Safety) Regulations 2008: Great Britain (retrieved 19 October 2026)
  4. HSE safety bulletin: brush cutters and flails (retrieved 19 October 2026)
  5. Environmental Protection Act 1990, section 79 (retrieved 19 October 2026)
  6. GOV.UK: noise nuisances and how councils deal with complaints (retrieved 19 October 2026)
  7. RSPCA: hedgehogs in the garden (retrieved 19 October 2026)
  8. STIHL UK: guide to grass trimmers, brushcutters and clearing saws (retrieved 19 October 2026)