Best Weed Eater Blades for Cutting Thick Growth
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A weed eater with blade capability is a trimmer that can cut with a metal blade head as well as with nylon line, so it handles woody stems, thick weeds and saplings that line alone cannot cut through. Not every listing offers that. Some ship with a nylon spool only, and some sell a blade set on its own for a machine you already own. This roundup covers both kinds of listing and states, for each one, which cutting tool it includes and what the listing says about its battery or power.
Quick answer
- For thick growth, choose a weed eater whose listing names a metal or saw blade, not only nylon line.
- The SmartGiant cordless weed wacker lists four blade types, including stainless steel hex blades and an alloy circular saw blade for branches.
- The CGNRONEAU set is blades only. It fits lithium battery weed whackers and cordless mowers listed in its bullets, and it does not include a trimmer.
- For corded use, the BLACK+DECKER 14-inch trimmer lists a 6.5-amp motor and an automatic feed spool, but its listing names nylon line, not a metal blade.
What a blade adds to a weed eater
Nylon line is good for grass along fences, edges and soft growth. It wears down against woody stems and it does not cut saplings. A metal or saw blade gives you a second cutting head. The listings in this roundup describe three kinds of blade: plastic or nylon for everyday grass, metal or hex blades for tough weeds and reeds, and saw blades for branches and small saplings. A blade has a cutting diameter, and a diameter that is too large for your guard will not fit safely, so check the size before you buy.
Blade safety is the other half of the choice. The CGNRONEAU listing says to keep the power off when changing a blade, and it says to wear gloves because the blade is sharp. It also says the guard must stay on the weed eater when a blade is in use. Follow those steps every time. If you are unsure whether a blade fits your machine, match the model in the listing against your own tool before you order.
How to choose a weed eater with a blade
Start with what you cut. Light grass and edges need only line. Thick weeds, reeds and small branches need a metal or saw blade. Next, check the power source. Battery models in this roundup run on 12-volt or 20-volt packs, and the listings state battery counts and chargers. A corded model needs an outlet and an extension cord within reach. Then check weight and handle. Several listings describe adjustable handles, and a lighter tool is easier to hold for long jobs.
Finally, check what is in the box. Some listings include batteries, a charger, guards and a set of blades. Others include only the trimmer head or only the blades. Read the included components line before you compare prices on the product page, because a low-looking listing may not include the battery.
Roundup: five listings compared
The table below uses only facts the listings state. Where a listing does not give a value, the table says “not stated.”
| Listing | Type | Blade or cutting head | Cutting width | Power |
|---|---|---|---|---|
| Aokia cordless weed wacker | Battery trimmer with adjustable pole | Metal blade and saw blade, listed as 2 types | 5.4 inches | 12V 2000mAh battery, listed in bullets |
| SmartGiant 20000RPM cordless weed wacker | 4-in-1 battery trimmer with wheels | 4 blade types, including hex and circular saw blade | 6 inches | 2 batteries and charger included, 12V listed |
| CGNRONEAU blade set (7 pieces) | Replacement blades only | Manganese steel circular saw blades, 6 inch diameter | Not stated as a width | Not applicable |
| BLACK+DECKER BESTA510 14-inch trimmer | Corded string trimmer with edger conversion | Nylon line with automatic feed spool; no metal blade listed | 14 inches | Corded, 6.5 amp motor |
| BLACK+DECKER LCC222 20V combo | Cordless trimmer and sweeper combo | Nylon line with automatic feed; no metal blade listed | 10 inches | 20V MAX, 2 batteries and charger included |
Listing blocks
Aokia Electric Weed Wacker Cordless with Adjustable Pole
The Aokia listing is built around its pole. The bullets say the pole splits into three lengths, 32 inches, 48 inches and 65 inches, using two detachable extension poles. The listing says the longest setting can be used to trim high branches, which is a different use from a standard trimmer. The bullets name two blade types: a metal blade for thick weeds, hedges and tender grass, and a saw blade for pruning branches and bushes. The listing says the motor reaches a maximum of 10,000 rpm and that the tool has a double-switch safety lock, so you hold the lock button before the trigger. The bullets describe a 12V 2000mAh battery that can be swapped out. Its listing also includes a one-year warranty line. Because the specs give two different weights and a battery entry that conflicts with the 12V battery in the bullets, check the battery and weight on the product page before you buy. This listing fits a shopper who wants a long reach from a battery trimmer and a metal blade for the thick growth in the same tool.
SmartGiant 20000RPM Cordless Weed Wacker with Wheels
The SmartGiant listing has the most blade types in this roundup. The first bullet names four blade types: plastic blades for everyday lawn trimming, stainless steel hex blades for tough weeds and reeds, an alloy circular saw blade for branches and saplings, and nylon string for soft grass edges. The listing says the tool handles woody brush up to 6 inches thick, but that is a listing claim, so treat it as the listing’s own figure. The bullets describe a 700W motor and 20000 rpm speed. The listing says it can switch between string trimmer, brush cutter, mini lawn mower and lawn edger modes in about 60 seconds. It includes two batteries, one charger, one circular saw blade, two hex blades, five plastic blades, two nylon strings, two removable wheels, safety goggles, work gloves and a grass deflector. The bullets say the telescoping shaft adjusts from 34.6 to 51.2 inches, and they give a weight of 7 pounds. The listing says the battery runs 120 to 180 minutes of trimming and recharges in 3 to 4 hours. There are two listing entries with the same title and bullets in our data, so this block covers one of them. The SmartGiant listing fits a shopper who wants blades, string and wheels in one box.
CGNRONEAU 7-Piece Weed Wacker Saw Blade Set
This listing is not a weed eater. It is a set of replacement blades for a trimmer you already own. The package includes two manganese steel circular saw blades, one lawn mower wrench, two nuts and two shims. The listing describes the blades as 6 inches in diameter, with a 5 mm saw blade aperture and a 1.1 mm blade thickness. It says the blade is suitable for cutting thicker shrubs and branches, weeds, lawn and small branches. The bullets also describe the blades as carbide tipped, which is a different claim from the manganese steel in the title. The listing says the blades install with the mower screwdriver and warns that changing a blade with the power on is forbidden. It says the guard must not be removed to use the blade. It lists compatibility with lithium battery weed whackers, lawn tools and cordless mowers, but it also says to check the size chart in the picture before buying. Buy this set only if your current trimmer uses a 6-inch blade with the same bore and guard.
BLACK+DECKER BESTA510 14-Inch Auto Feed Trimmer
The BLACK+DECKER BESTA510 is a corded trimmer, and its listing names a nylon line system, not a metal blade. It is included here so you can see the difference. The listing says the automatic feed spool feeds line without bumping, and it says the 6.5 amp motor with POWERDRIVE transmission handles tough weeds and overgrowth. The cut path is 14 inches, and the speed is 8000 rpm. The listing says the head rotates to convert the trimmer into a wheeled edger. It includes an auxiliary handle, a guard and an AF-100 spool. The listing gives a 2-year limited warranty and a 30-day money-back guarantee, and it gives a weight of 6.3 pounds. Choose this if you want a corded tool for edges and grass, and buy a metal blade attachment separately if you need to cut thick woody growth.
BLACK+DECKER LCC222 20V MAX Weed Eater, Edger and Sweeper Combo
The BLACK+DECKER LCC222 is a cordless combo. It includes a string trimmer, a wheeled edger conversion and a leaf blower sweeper. The listing says it ships with two lithium ion batteries and a charger, and it names the 20V MAX lithium ion battery with 1.5 amp hours. The trimmer weighs 4.5 pounds according to the bullets, and the listing gives a 10-inch cutting width. The automatic line feed supplies line as needed. The bullets say the battery holds its charge for up to 18 months, which is a listing claim. The listing does not describe a metal blade for this trimmer, so it is a line trimmer for grass and edges. If your main job is thick brush, look at the SmartGiant listing or add a metal blade to a compatible trimmer. This combo fits a shopper who wants a trimmer, an edger and a sweeper on one 20V platform.
Review: which option to choose for thick growth
For thick growth, the SmartGiant listing is the most direct match in this roundup. It names a metal hex blade and a circular saw blade in its own bullets, and it includes both. The Aokia listing is a second option for a long pole and a metal blade in one battery tool, but its battery and weight entries are not consistent, so confirm them first. The CGNRONEAU blade set is the right choice only if you already own a compatible trimmer and want the blade part. The two BLACK+DECKER listings are better for grass, edges and light weeds, because their listings name nylon line.
When you compare, put the blade types next to your yard. A patch of tall dandelions and crabgrass does not need a saw blade. A row of saplings along a fence does. The listings state their own blade kits, so the safest buy is the one whose included cutting head matches your worst job, not the one with the longest list of accessories.
Mistakes to avoid
- Buying a blade set for a trimmer with a different shaft or guard. Check the size chart and the guard before you order.
- Changing a blade with the power on. The CGNRONEAU listing says this is forbidden.
- Assuming a nylon-line trimmer will cut saplings. The BLACK+DECKER listings name line, not a metal blade.
- Skipping the guard. The CGNRONEAU listing says the guard must stay on while the blade is in use.
- Comparing battery runtimes that the listings do not measure the same way. Read each listing’s battery line.
Safety and handling
A metal or saw blade cuts hard material and can throw debris. Wear eye protection and gloves, which the SmartGiant and CGNRONEAU listings both include or recommend. Keep bystanders and pets away from the cutting zone, and clear the work area before you start. Turn off and unplug the tool before any blade change. The Aokia listing says to clear the work area, wear protective gear and avoid wet conditions, and that advice applies to any battery or electric trimmer. If you are unsure whether a blade is safe for your machine, ask the manufacturer or a local repair shop before you run it.
FAQ
Can a weed eater cut saplings with a blade?
Some listings say so. The SmartGiant listing names an alloy circular saw blade for branches and saplings. The CGNRONEAU blade set names saw blades for small branches. Nylon line listings do not state that they cut saplings.
Do these weed eaters include batteries?
It depends on the listing. The SmartGiant listing includes two batteries and a charger. The BLACK+DECKER LCC222 includes two batteries and a charger. The BESTA510 is corded and needs an outlet. The CGNRONEAU set is blades only.
What blade size fits most trimmers?
The CGNRONEAU set lists a 6-inch diameter, a 5 mm aperture and a 1.1 mm thickness. Check your own trimmer’s guard and manual before you buy, because the listing says to confirm the size chart.
Is a corded trimmer better than a battery one?
A corded trimmer runs as long as the outlet is in reach and does not need charging. A battery trimmer lets you work away from an outlet. The listings give battery and runtime facts for the cordless models, and they give a cord-based power source for the BESTA510.
Can I use a blade on any weed eater?
No. The blade must match your machine’s shaft and guard. The CGNRONEAU listing warns against removing the guard, and its size chart is the only fit guide it gives.
Which listing has the longest warranty?
The BESTA510 and LCC222 both state a 2-year limited warranty. The Aokia bullets mention a one-year warranty. The SmartGiant bullets mention a 12-month warranty. The CGNRONEAU listing does not state a warranty.
Bottom line
Choose a weed eater with a blade only if the listing names a metal, hex or saw blade in its included parts. For thick growth and small branches, the SmartGiant listing is the most complete option here. If you already own a compatible trimmer, the CGNRONEAU set adds the blade for less. For edges and grass, the BLACK+DECKER listings are the simpler choice, and they do not claim a metal blade.
For more battery trimmer options, see Top 10 Battery Powered Weed Eaters: 6 Real Picks Compared. If you want a DeWalt option instead, read Best DeWalt 20V Max Brushless Weed Eaters.
