Oregon 3-Tooth Mulching Blade 300 × 3.0 mm
Oregon's heavy 300 mm, 3 mm 3-tooth mulching blade (42–48 HRC, ISO 7113) — for high grass, brambles and dense growth on powerful machines.
In short:The Oregon 3-tooth mulching blade is 300 mm in diameter and 3.0 mm thick, with tapered edges, hardened steel at 42–48 HRC and a weight of about 615 g. It meets ISO 7113 and the Machinery Directive 2006/42/EC, and comes with a 20 mm aluminium adaptor. It is designed to shred high grass, brambles and dense vegetation, but a 300 mm blade needs a powerful brush cutter rated for that diameter and the matching guard.
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Pros
- Thick 3 mm steel shreds brambles and dense growth
- Wide 300 mm cut on open ground
- Meets ISO 7113 for brush cutter tools
Cons
- Needs a powerful machine rated for a 300 mm blade
- Heavy — adds load to the gearbox and your arms
- Not for saplings — use a saw blade
What it is
Despite this page’s address, the blade on our link is Oregon’s 3-tooth mulching (shredder) blade: 300 mm across, 3.0 mm thick, with tapered edges, hardened steel at 42–48 HRC and a weight of about 615 g. It meets ISO 7113 — the standard for brush cutter cutting tools — and the Machinery Directive 2006/42/EC, and comes with a 20 mm aluminium adaptor. It was sold by Amazon when we checked in October 2026.
What it does
Mulching blades chop vegetation into short pieces rather than leaving long stems lying, which makes clearing high grass, brambles and dense growth faster and tidier. The thick 3 mm body shrugs off impacts that would bend a thinner blade.
Will your machine take it?
This is the critical question. A 300 mm blade needs a powerful brush cutter whose manual lists that diameter, with the guard designed for it — typically larger petrol machines with a bike handle and a full harness. Fitting it to a smaller machine overloads the clutch and gearbox and is unsafe. If in doubt, choose a 255 mm blade such as the Oregon 3-tooth 255.
Safety
Fit the thrust washer and nut correctly (usually left-hand thread — how to fit a blade), wear a visor, boots and gloves, and keep everyone 15 m away. Toothed blades kick back on solid wood in the 12-to-2 o’clock zone (kickback explained). Compare options in the best brush cutter blades.
More blades we cover
A heavy 300 mm, 4 mm-thick Oregon 3-tooth shredder blade (42–48 HRC, ISO 7113) — our pick for brambles, scrub and dense vegetation on powerful brush cutters.
- Type3-tooth mulching / shredder blade
- Size300 mm × 4.0 mm
- Steel hardness42–48 HRC
A budget 254 mm 3-tooth blade in 1.5 mm high-carbon steel with a 25.4 mm bore — reversible and re-sharpenable, for occasional long grass and scrub.
- Type3-tooth brush blade
- Size254 mm (10 in), 25.4 mm bore
- SteelHigh-carbon steel, 1.5 mm
A two-blade set: a 230 mm 36-tooth carbide-tipped blade for brush, brambles and young wood, plus a 255 mm 3-tooth steel blade for tall grass.
- Blades230 mm 36-tooth carbide + 255 mm 3-tooth steel
- Carbide bladeManganese steel body, tungsten-carbide tips
- Arbor adapters25.4 mm and 20 mm included
Einhell's original 3-tooth thicket blade: 255 mm, 2.5 mm thick, 25.4 mm bore — for tall, woody grass, rank growth and light scrub on Einhell brush cutters.
- Type3-tooth thicket blade
- Diameter255 mm
- Thickness2.5 mm