Best Lawn Edger Attachments for String Trimmers
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A lawn edger attachment is a guided cutting blade that connects to a compatible string trimmer power head, so the same motor can cut a clean line along a sidewalk, curb or flower bed. The three things that decide whether one works for you are the connection style, the blade size and how the cutting depth is set. The six attachments below are the ones in our product data set that their listings describe as edger attachments. Each section uses only what the listing says.
Quick answer
- Check the connection first. The listings use three styles: EGO’s multi-head system, WORX’s driveshare design, and a 1-inch tube with square-shaft coupler.
- For a 9-inch blade with depth set by a wheel, the VIYUKI and POSERN listings describe the same blade layout and coupler dimensions. COPLAR lists a 1.5-inch cutting depth.
- If you already own EGO 56V batteries, the EGO kit is the only option here that includes a power head and names a battery platform.
- For a gas trimmer from a mixed list of brands, the TrimmerPlus listing names the widest range of compatible brands.
How the connection decides the fit
An edger attachment only works with a trimmer built to accept it. Look for the words attachment capable in the product listing or in your trimmer’s manual, and confirm the shaft type before you order. The six listings describe three different setups:
- Multi-head system (EGO). The kit includes the EGO Power Head PH1420 and the 8-inch EA0820 edger. The listing says the power head pairs with all of the Power+ Multi Head System attachments.
- Driveshare design (WORX). The WA0223 is made for the WORX Nitro Driveshare trimmer (WG186). The listing also says it fits most split-shaft trimmers from other brands.
- Tube and square-shaft coupler (TrimmerPlus, VIYUKI, POSERN). These listings give the coupler dimensions in full: a 1-inch powerhead tube, a .205-inch square drive connector and a .200-inch square attachment shaft across flats. Measure your own trimmer before you buy.
COPLAR’s listing does not state a coupler size, a shaft type or a list of compatible brands. If you are new to edging, the guide how to edge a lawn with an electric edger covers the basic technique before you choose an attachment.
Blade size and depth at a glance
The table shows what each listing states. “Not stated” means the listing does not give that figure.
| Attachment | Blade or cutting width | Depth in the listing | Connection or power basis |
|---|---|---|---|
| EGO ME0820 kit | 8-inch edger | Up to 3 inches of edging depth | EGO Multi-Head System; 56V ARC battery (battery and charger not included) |
| TrimmerPlus TPE720 | 7.5-inch dual steel blade | Listing says up to 25 inches (see note below) | Gas powered; 1-inch tube coupler |
| WORX WA0223 | 8-inch cutting blade | Not stated | WORX Driveshare; split-shaft trimmers |
| VIYUKI 9-inch | 9-inch, 2-tooth tri-arc | Set by wheel; no maximum stated | 1-inch tube coupler; .205-inch square connector |
| POSERN 9-inch | 9-inch, 2-tooth tri-arc | Set by wheel; no maximum stated | Same coupler dimensions as VIYUKI |
| COPLAR 9-inch | 9-inch hard steel blade | 1.5 inches | Not stated |
The TrimmerPlus listing gives a maximum depth of 25 inches. That figure is unusually large for an edger, so confirm it with the listing or the manufacturer before you rely on it.
The six attachments, one by one
EGO Power+ 8-inch Lawn Edger Attachment and Multi-Head System Power Head (ME0820)
This is a bundle rather than an add-on. The listing says it includes the EGO Power Head PH1420 and the 8-inch EA0820 edger attachment. The power head uses a brushless motor and has a digital two-speed selector, which the listing says lets you set the speed for each attachment. The edger has a guide wheel with a depth adjustment knob, and the listing gives an editing depth of up to 3 inches. The shaft is carbon fiber. The listing describes the unit as IPX4-rated weather resistant and gives a five-year tool warranty. The spec table lists an item weight of 10.8 pounds and a speed of 7000 rpm, and it says the item is sold without battery or charger, so you need an EGO 56V ARC battery. The listing says the same power head pairs with the other Multi-Head System attachments, including a pole saw, hedge trimmer and cultivator. This option makes most sense if you already use EGO batteries or want one power head for several jobs.
TrimmerPlus Lawn Edger Attachment (TPE720)
The TrimmerPlus attachment has a hardened steel 7.5-inch dual blade, a large guide wheel to help keep the cut straight, and an adjustable blade depth. The listing is for gas-powered equipment. It says the attachment fits attachment-capable units from Troy-Bilt, Remington, Craftsman, Yard Machines, Yardman, Snapper, Bolens, Murray, Ryobi, Greenworks and Kobalt, along with most other major brands. The listing also refers to a full list of compatible models in its description, which is not reproduced in our product data, so check your model number against that list. The coupler details are a 1-inch powerhead tube, a square .205-inch drive shaft connector and a square .200-inch attachment drive shaft across flats. The listing shows two numbers, 41BJEA-C902 as the model and 41AJEA-C902 as the part number, so match whichever number your parts list uses. The depth figure is the one flagged above. This is the option to consider if you have a gas trimmer from one of the listed brands.
WORX Driveshare 8-inch Lawn Edger Attachment (WA0223)
The WORX attachment is built for the WORX Nitro Driveshare string trimmer (WG186). The listing says it also fits most split-shaft design trimmers from other brands. It has a heavy-duty steel cutting blade and an adjustable guide wheel, which the listing says accommodates various cutting heights. The package includes the attachment, a wrench and a hex key. The listing does not state a depth maximum, a weight or a coupler size. Because the fit depends on the shaft design rather than a set of dimensions, check that your trimmer’s shaft is split before you order, and check the trimmer’s manual if you are not sure. This is the attachment in the set most closely tied to one brand’s design, so a non-WORX trimmer needs the most checking.
VIYUKI 9-Inch Cutting Blade Lawn Edger Universal Attachment (VI-EA-01-New)
The VIYUKI attachment uses a 9-inch steel blade with two teeth and a 1-inch center arbor hole. The listing says the constant-torque gearbox is rugged and durable. Depth is set by the wheel: lowering the wheel decreases the cutting depth, and raising it increases the depth. The listing gives the same coupler dimensions as the TrimmerPlus listing, a 1-inch aluminum tube, a .205-inch female square drive connector and a .200-inch square attachment shaft across flats. The brand list in the listing includes Ryobi, Greenworks, Remington, Craftsman, Yard Machines, Troy-Bilt, Yardman, Snapper, Bolens, Murray and Kobalt. The listing does not state a maximum depth. It is a good match for a 9-inch edging job on a trimmer whose tube and shaft match those numbers.
POSERN 9-Inch Cutting Blade Lawn Edger Attachment (BX-EA-01)
The POSERN attachment uses the same blade and gearbox layout as the VIYUKI: a 9-inch hardened steel blade with two teeth, a 1-inch arbor hole, a constant-torque gearbox and an adjustable wheel. The listing’s coupler dimensions match the VIYUKI listing, and it names the same group of compatible brands. The title describes it as a light weight edger head, but the listing does not give a weight. The listing states no maximum depth, only that the wheel height controls it. Choose the POSERN if its brand list and coupler dimensions fit your trimmer and you want the blade layout described in its own listing.
COPLAR 9-Inch Edger Lawn Tool Attachment
The COPLAR listing has the least detail in this set. It describes a hard steel cutting blade 9 inches in diameter with a cutting depth of 1.5 inches. It does not list compatible brands, a coupler size or a shaft type. Its model field reads “1” and its part number reads “Edger Attachment,” so the listing gives no model number to match against your trimmer. Before buying, confirm the connection with the seller or your trimmer’s manual. It can suit a plain 9-inch edging job where a 1.5-inch cut depth is enough.
Who each attachment suits
The listings point to different buyers, so start with the trimmer you own rather than the blade you want.
- EGO kit: a homeowner who already runs EGO 56V batteries and wants one brushless power head for an edger and other Multi-Head System attachments.
- TrimmerPlus: an owner of a gas trimmer from one of the listed brands who wants a 7.5-inch dual blade and a wheel for straight edges.
- WORX WA0223: a WORX Nitro Driveshare owner, or anyone with a split-shaft trimmer whose shaft type is confirmed in the manual.
- VIYUKI or POSERN: a buyer with a trimmer that matches the 1-inch tube and .205-inch square connector numbers, who wants a 9-inch blade with wheel-set depth.
- COPLAR: a buyer who needs a plain 9-inch edger with a 1.5-inch cut depth and is willing to confirm the connection with the seller first.
If your trimmer is not in any of these groups, the listings do not cover it, and a different attachment or a dedicated edger is the safer route.
Common mistakes
- Buying on blade size alone. The connection style and coupler dimensions decide whether an attachment fits at all.
- Skipping the model list. The TrimmerPlus listing points to a model list in its description. Check your model before ordering.
- Assuming a depth figure applies to every option. Only EGO, COPLAR and the TrimmerPlus listing give a depth figure. The VIYUKI and POSERN listings say depth is set by the wheel.
- Mixing battery and gas systems. The EGO kit runs on EGO 56V batteries, and the TrimmerPlus is listed as gas powered. Check your power head before you choose.
- Forgetting the hardware. The WORX package includes a wrench and hex key. Keep them with the trimmer so the attachment can be swapped without a search.
FAQ
Will any edger attachment fit any string trimmer?
No. The listings in this set describe three connection styles: EGO’s multi-head system, WORX’s driveshare design, and the 1-inch tube with square-shaft coupler used by TrimmerPlus, VIYUKI and POSERN. Check your trimmer’s manual or measure the tube and shaft before buying.
Does the attachment include a trimmer motor?
Only the EGO kit does. It includes the Power Head PH1420. The other listings describe edger attachments only, so the trimmer you already own supplies the motor, and the attachment must match it.
Which listing gives the clearest depth information?
EGO states up to 3 inches of edging depth and COPLAR states 1.5 inches. TrimmerPlus gives a 25-inch figure that is unusually high for an edger. VIYUKI and POSERN describe a wheel adjustment without a maximum.
Do I need a battery for the EGO kit?
Yes. The listing says the kit runs on EGO 56V ARC lithium batteries, and the spec table says the battery and charger are not included.
Does the WORX attachment work with other brands?
The listing says it fits most split-shaft design trimmers from other brands, and it names the WORX WG186 Nitro Driveshare as its main match. Confirm that your trimmer’s shaft is split before you order.
Can I use VIYUKI or POSERN on a gas trimmer?
Both listings name a group of attachment-capable brands, including Ryobi, Greenworks, Craftsman and Troy-Bilt. Neither listing says whether a unit is gas or battery powered, so check your trimmer’s coupler and brand against the list.
Bottom line
Choose the attachment by fit first. Check your trimmer’s shaft type and coupler size, then pick the blade and depth you need. If you already own EGO 56V batteries, the EGO kit is the most complete choice in this set. A WORX trimmer with a split shaft points to the WORX attachment. For a 9-inch wheel-depth edger on a standard 1-inch tube and square shaft, the VIYUKI and POSERN listings match the coupler numbers. For a wider look at battery edgers, see best cordless lawn edgers and string trimmers compared.
