> ## Content Index > Fetch the complete content index at: https://udiwg.org/llms.txt > Use this file to discover other available public pages before exploring further. # Best Attachment Capable String Trimmers: Greenworks Leads - URL: https://udiwg.org/best-attachment-capable-string-trimmer-large/ - Published: 2026-09-07T07:32:27.000Z - Updated: 2026-09-07T09:49:27.000Z - Description: Seven attachment capable trimmers compared on swath width, shaft weight and what each one plugs into. The Greenworks 60V takes the top spot, but two picks beat it on weight. - Author: Dane Jones - Tags: Outdoor Power Tools, Lawn Care, Yard Equipment The best attachment capable string trimmer for large yards is the Greenworks 60V ST60L413, because a 16-inch cutting swath and a brushless 60V motor cover ground faster than any other complete tool here. If you want the widest published warranty and an adjustable 15 to 17 inch swath instead, the DEWALT DCST972X1 with its 3-year coverage is the better buy at 15 lb. Get the platform choice wrong and you don't just lose a trimmer. You lose every attachment you were planning to buy for the next five years, because none of these shafts talk to each other. In this guide 1. [Best attachment capable string trimmer for large yards at a glance](#best-attachment-capable-string-trimmer-for-large-yards-at-a-glance) 2. [How I screened these seven listings](#how-i-screened-these-seven-listings) 3. [Does an attachment capable string trimmer really suit large yards?](#does-an-attachment-capable-string-trimmer-really-suit-large-yards) 4. [1\. Greenworks 60V 16 in Cordless String Trimmer — Best overall](#1-greenworks-60v-16-in-cordless-string-trimmer-%E2%80%94-best-overall) 5. [2\. DEWALT 60V Cordless String Trimmer with Battery & Charger — Best premium](#2-dewalt-60v-cordless-string-trimmer-with-battery-charger-%E2%80%94-best-premium) 6. [3\. EGO Power+ EGO STA1600 16-Inch Carbon Fiber String Trimmer — Best for heavy use](#3-ego-power-ego-sta1600-16-inch-carbon-fiber-string-trimmer-%E2%80%94-best-for-heavy-use) 7. [4\. RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable — Runner-up](#4-ryobi-40-volt-lithium-ion-cordless-attachment-capable-%E2%80%94-runner-up) 8. [5\. RYOBI 40V Attachment Capable 15" String Trimmer Bare Tool — Best for beginners](#5-ryobi-40v-attachment-capable-15-string-trimmer-bare-tool-%E2%80%94-best-for-beginners) 9. [6\. Wild Badger Power Upgraded 40V Cordless String Trimmer & — Best for families](#6-wild-badger-power-upgraded-40v-cordless-string-trimmer-%E2%80%94-best-for-families) 10. [7\. Kerlista Universal Flexible Shaft String Trimmer — Best budget pick](#7-kerlista-universal-flexible-shaft-string-trimmer-%E2%80%94-best-budget-pick) 11. [Which attachment system are you actually buying into?](#which-attachment-system-are-you-actually-buying-into) 12. [Swath width, weight, and the trade-off nobody mentions](#swath-width-weight-and-the-trade-off-nobody-mentions) 13. [What the listings leave out](#what-the-listings-leave-out) 14. [When a different pick wins](#when-a-different-pick-wins) 15. [The verdict](#the-verdict) 16. [FAQ](#faq) ## Best attachment capable string trimmer for large yards at a glance | Pick | Cutting swath | Weight | Price | | ------------------------------------------------------------------------------------------------------------------------------------- | ------------------- | -------------------- | ---------------------------------------------------------------- | | **Best overall**[Greenworks 60V 16 in Cordless String Trimmer](https://www.amazon.com/dp/B0BK7JTDYW?tag=udiwg-20) | 16 in | 18.7 lb | [Check Price](https://www.amazon.com/dp/B0BK7JTDYW?tag=udiwg-20) | | **Best premium**[DEWALT 60V Cordless String Trimmer with Battery & Charger](https://www.amazon.com/dp/B08QVGYCDD?tag=udiwg-20) | 15–17 in adjustable | 15 lb | [Check Price](https://www.amazon.com/dp/B08QVGYCDD?tag=udiwg-20) | | **Best for heavy use**[EGO Power+ EGO STA1600 16-Inch Carbon Fiber String Trimmer](https://www.amazon.com/dp/B0CPDXX51W?tag=udiwg-20) | 16 in | 3.4 lb (arm only) | [Check Price](https://www.amazon.com/dp/B0CPDXX51W?tag=udiwg-20) | | **Runner-up**[RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable](https://www.amazon.com/dp/B07PHZZJFS?tag=udiwg-20) | 13–15 in adjustable | 13.9 lb | [Check Price](https://www.amazon.com/dp/B07PHZZJFS?tag=udiwg-20) | | **Best for beginners**[RYOBI 40V Attachment Capable 15" String Trimmer Bare Tool](https://www.amazon.com/dp/B0D23XZKZL?tag=udiwg-20) | 15 in | 11 lb | [Check Price](https://www.amazon.com/dp/B0D23XZKZL?tag=udiwg-20) | | **Best for families**[Wild Badger Power Upgraded 40V Cordless String Trimmer &](https://www.amazon.com/dp/B0F3C422K6?tag=udiwg-20) | 15 in | 26.5 lb (4-tool kit) | [Check Price](https://www.amazon.com/dp/B0F3C422K6?tag=udiwg-20) | | **Best budget pick**[Kerlista Universal Flexible Shaft String Trimmer](https://www.amazon.com/dp/B0B226HSDV?tag=udiwg-20) | Not listed | 3 lb (arm only) | [Check Price](https://www.amazon.com/dp/B0B226HSDV?tag=udiwg-20) | ## How I screened these seven listings I started from a simple filter: the shaft has to accept other tools. That knocked out most of the cordless trimmer field immediately, because a sealed one-piece shaft is cheaper to build and most brands build it. What survived splits into three groups, and knowing which group you're shopping in matters more than any single figure: 1. **Complete tools with a battery in the box.** The Greenworks ST60L413, the DEWALT DCST972X1 and the Wild Badger kit. You unbox, charge, trim. 2. **Bare tools.** The RYOBI RY40205 at 11 lb. Motor and shaft, no battery, no charger. 3. **Attachment arms only.** The EGO STA1600 at 3.4 lb and the Kerlista flexible shaft at 3 lb. Neither has a motor. Both need a power head you already own. Then I lined up the published specifications side by side: swath width, weight, dimensions, stated warranty, and what each shaft accepts. Two picks publish a warranty figure. Five don't. That gap alone reshuffled my ranking, and I'll come back to it. I did not cut anything for being an accessory rather than a tool. If you already own a compatible power head, an arm is the cheapest route to a wider swath in this whole set. ## Does an attachment capable string trimmer really suit large yards? Partly, and this is worth being straight about before you spend anything. Nothing in these listings states an acreage figure, a coverage area, or a runtime under load. The best attachment capable string trimmer for large yards is a shape of tool, not a certified capacity. What the data does give you is swath width, and swath width is arithmetic you can do yourself. A 16-inch path clears 6.7% more ground per pass than a 15-inch path. Over a long boundary fence, that adds up. Two figures are directly comparable across the set: - **16 inches**: Greenworks ST60L413, EGO STA1600 - **15 inches (or up to 15)**: RYOBI RY40205, RYOBI RY40250, Wild Badger - **15 to 17 inches, adjustable**: DEWALT DCST972X1 The DEWALT's 17-inch setting is the widest published figure here. RYOBI's listing explains the trade-off plainly: a 13-inch setting buys longer run time, a 15-inch setting buys a wider path. Same battery, your choice. Runtime is where the promises thin out. Only one listing publishes a number: RYOBI states up to 71 minutes on a 40V 4Ah battery for the RY40205\. Everyone else describes runtime in adjectives. Treat "longer runtime" as marketing language and plan on a spare battery if your yard is genuinely big. ## 1\. Greenworks 60V 16 in Cordless String Trimmer — Best overall **A 16-inch swath, a 60V brushless motor and a shoulder strap in the box make this the most complete large-yard package here.** [![Greenworks 60V cordless string trimmer with 16-inch head and shoulder strap — the widest swath among complete tools in this set](https://m.media-amazon.com/images/I/31Ggg3Bi9AL._SL500_.jpg)](https://www.amazon.com/dp/B0BK7JTDYW?tag=udiwg-20) **Best for:** a wide swath plus a shaft that takes more tools later **Skip it if:** you need a light tool for overhead or one-handed work Two things separate this from the rest of the field. It ties the EGO arm for the widest fixed swath at 16 inches, and it's the only complete tool in this set that lists a shoulder strap as included. At 18.7 lb it's the heaviest single trimmer here, so that strap isn't a nice extra. It's the reason the weight is manageable at all. The shaft measures 68.5 inches long, the longest of any complete tool in the set. Tall users get a straighter back. Shorter users may find it unwieldy near flower beds. Greenworks says the brushless motor delivers longer runtime and consistent power in thicker grass, and describes the shaft as accepting compatible Greenworks attachments. Note the wording: compatible Greenworks attachments, not universal gas attachments. Both RYOBI listings claim broader reach on that point. It's the tool buyers choose most often among the complete trimmers here, and it sits roughly mid-range for this set on price. The trade-off against the DEWALT is stark: no published warranty figure, no adjustable swath, and 3.7 lb more to carry. **Pros:** - 16-inch swath, widest fixed path among complete tools - Brushless 60V motor - Shoulder strap included - Load N' Go head for quick line reloading - Chosen most often among the complete trimmers here **Cons:** - Heaviest complete trimmer in the set at 18.7 lb - No warranty term published on the listing - Swath is fixed, so no runtime-saving narrow setting - Attachment claim is limited to compatible Greenworks tools [Check Price on Amazon](https://www.amazon.com/dp/B0BK7JTDYW?tag=udiwg-20) ## 2\. DEWALT 60V Cordless String Trimmer with Battery & Charger — Best premium **The only pick here that pairs a 15 to 17 inch adjustable swath with a stated 3-year warranty.** [![DEWALT DCST972X1 60V trimmer with battery and charger — adjustable 15 to 17 inch swath, the widest published setting in this set](https://m.media-amazon.com/images/I/31EU3pvNczL._SL500_.jpg)](https://www.amazon.com/dp/B08QVGYCDD?tag=udiwg-20) **Best for:** someone who wants an adjustable swath and a stated 3-year warranty **Skip it if:** you already own another battery platform This is the most expensive pick here, and it's the only complete trimmer that earns the premium with published detail rather than adjectives. The warranty is stated as 3 years on material and workmanship. Five of the seven listings publish no warranty term at all, and the closest competitor states 30 days. The swath adjusts between 15 and 17 inches. That 17-inch setting is the widest figure published anywhere in this set. It runs 0.080 in dual line and DEWALT says it also works with 0.095 in line, which is the only line-gauge detail in the whole group. At 15 lb it's 3.7 lb lighter than the Greenworks. DEWALT calls the attachment capability universal, and adds a variable trigger with hi/lo speed control to stretch runtime when the grass is thin. The dimensions read as 40.3 inches long, so this is a shorter shaft than the Greenworks. It's also the slower seller of the two 60V tools here. The real cost isn't the sticker: it's committing to a battery platform, and no runtime figure is published to justify the jump. **Pros:** - 3-year warranty on material and workmanship, longest stated here - Adjustable 15 to 17 in swath - Two line gauges supported, 0.080 in and 0.095 in - Variable trigger plus hi/lo speed control - 15 lb, lighter than the top pick **Cons:** - Most expensive pick in this set - No shoulder strap mentioned in the listing - No published runtime figure - Only one seller lists it [Check Price on Amazon](https://www.amazon.com/dp/B08QVGYCDD?tag=udiwg-20) ## 3\. EGO Power+ EGO STA1600 16-Inch Carbon Fiber String Trimmer — Best for heavy use **A 3.4 lb carbon fiber arm with a lifetime shaft warranty claim, for anyone already holding an EGO power head.** [![EGO STA1600 carbon fiber trimmer attachment — 16-inch swath at just 3.4 lb, the lightest 16-inch option here](https://m.media-amazon.com/images/I/21HI9K2Oo8L._SL500_.jpg)](https://www.amazon.com/dp/B0CPDXX51W?tag=udiwg-20) **Best for:** existing EGO Multi-Head owners adding a 16-inch trimmer arm **Skip it if:** you don't own a PH1400 or PH1420 power head Read the compatibility line first, because this is an attachment, not a trimmer. EGO states it works with the Multi-Head power heads PH1400 and PH1420, sold separately. No power head, no tool. If you have one, this is the strongest value proposition in the set. A 16-inch swath at 3.4 lb of arm weight matches the Greenworks cutting path with a fraction of the mass hanging off the head. EGO claims a lifetime warranty on the carbon fiber shaft, the only lifetime claim anywhere here. The line-loading story splits by power head. POWERLOAD works with the PH1420 only: feed line, push a button, done. Pair it with the PH1400 and you get Rapid Reload instead, which EGO describes as lining up arrows, inserting line and twisting. Worth checking which head you own before you assume you're getting the button. It's the second-cheapest pick here and it sells faster than every other item in this lineup. The catch is obvious: total cost depends entirely on a power head that isn't in the box, so it can't compete for a first-time buyer. **Pros:** - 16-inch swath, tied for widest fixed path - Only 3.4 lb of arm weight - Lifetime warranty claim on the carbon fiber shaft - Sells faster than anything else in this set - Second-cheapest pick here **Cons:** - Useless without a PH1400 or PH1420 power head - POWERLOAD only works on the PH1420 - Locked to the EGO Multi-Head system, no universal fit - No runtime figure, since the battery lives in the head [Check Price on Amazon](https://www.amazon.com/dp/B0CPDXX51W?tag=udiwg-20) ## 4\. RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable — Runner-up **The broadest attachment claim in the set, and the battery and charger are in the box.** [![RYOBI 40V attachment capable trimmer with 4.0 Ah battery and charger — accepts Expand-It and universal gas attachments](https://m.media-amazon.com/images/I/41Vv3LARC5L._SL500_.jpg)](https://www.amazon.com/dp/B07PHZZJFS?tag=udiwg-20) **Best for:** buyers who want universal gas attachment compatibility **Skip it if:** you want the widest possible cutting path RYOBI makes the widest compatibility claim here. The listing says it accepts Expand-It attachments *and other universal gas attachments*, which reaches beyond the single-brand wording Greenworks and EGO use. If you've inherited a shed full of gas-era attachments, that sentence is the whole reason to look at this one. At 13.9 lb it's the second-lightest complete trimmer in the set, and the 4.0 Ah battery plus a 90-minute charger arrive with it. The swath adjusts from 13 to 15 inches, and RYOBI is unusually direct about why: narrow for longer run time, wide for a bigger path. The head is a Reel-Easy bump-feed design and the trigger is variable speed. Shaft length is 35.4 inches, the shortest of the complete tools. Two things hold it back from the top spot. Its 15-inch maximum is an inch under the Greenworks and two under the DEWALT's widest setting, which matters over a long fence line. And it sits in the most expensive price group here despite that narrower path and no published warranty term. It's also the slowest-moving of the three complete trimmers with batteries included. **Pros:** - Accepts Expand-It plus other universal gas attachments - 4.0 Ah battery and 90-minute charger included - 13 to 15 in adjustable swath - 13.9 lb, second-lightest complete tool here - Variable speed trigger **Cons:** - 15-inch maximum swath trails both 60V picks - Premium price position without a published warranty - Shortest shaft of the complete tools at 35.4 in - Slowest seller among the battery-included trimmers [Check Price on Amazon](https://www.amazon.com/dp/B07PHZZJFS?tag=udiwg-20) ## 5\. RYOBI 40V Attachment Capable 15" String Trimmer Bare Tool — Best for beginners **The lightest complete trimmer here at 11 lb, with the only published runtime figure in the set.** [![RYOBI RY40205 bare tool 40V trimmer — 11 lb, the lightest complete trimmer in this lineup](https://m.media-amazon.com/images/I/21jYAIcEmVL._SL500_.jpg)](https://www.amazon.com/dp/B0D23XZKZL?tag=udiwg-20) **Best for:** a first cordless trimmer if you already hold RYOBI 40V batteries **Skip it if:** you have no batteries or charger yet At 11 lb this is the lightest tool with a motor in the whole set, 7.7 lb under the Greenworks. For someone new to cordless yard work, or anyone who trims in short bursts around beds and posts, that difference is felt in the shoulders within ten minutes. It's also the only listing here that publishes a runtime: up to 71 minutes with a 40V 4Ah battery. Everyone else uses adjectives. RYOBI further claims more power than a 21cc gas trimmer, framing it as a gas replacement. The shaft is Expand-It capable, so it opens the same attachment catalogue as the RY40250 above. The 15-inch swath and the 40-inch shaft make it a straightforward, unfussy tool. Now the catch, and it's the whole story on this one. This is a bare tool. No battery, no charger. If you don't already own RYOBI 40V packs, the real cost is far above the entry price position it occupies, and the published warranty is 30 days limited, the shortest stated term here by a long way. That's why it's a beginner pick only for someone already inside the RYOBI system. **Pros:** - 11 lb, lightest tool with a motor here - Publishes a real runtime figure, up to 71 minutes on a 4Ah pack - Expand-It attachment capable - Entry price position **Cons:** - No battery or charger included - 30-day limited warranty, shortest stated term in the set - 15-inch swath, narrower than both 60V picks - Slow seller compared with the top three [Check Price on Amazon](https://www.amazon.com/dp/B0D23XZKZL?tag=udiwg-20) ## 6\. Wild Badger Power Upgraded 40V Cordless String Trimmer & — Best for families **Four yard tools, two batteries and a charger in one box, which no other pick here matches.** [![Wild Badger 40V 4-in-1 kit with trimmer, pole saw, hedge trimmer and brush cutter heads — the only complete multi-tool set here](https://m.media-amazon.com/images/I/31cOWIlEioL._SL500_.jpg)](https://www.amazon.com/dp/B0F3C422K6?tag=udiwg-20) **Best for:** households wanting four yard tools in one box **Skip it if:** weight or heavy brush is your main concern This is the only pick that solves the attachment question by including the attachments. The count field reads 4, and the listing details a 15-inch string trimmer and edger, an 8-inch pole saw, a 16-inch hedge trimmer and a brush cutter. Two 20V 4.0Ah batteries combine to make the 40V system, and a charger is included. For a household where one person edges the drive and another cuts back the hedge, that's a genuinely different proposition from buying arms one at a time. Wild Badger says the quick-connect design swaps heads in seconds without tools. The shipping weight is 26.5 lb, which covers the whole kit rather than one assembled tool. The shaft measures 69 inches, the longest here. Read one line carefully though. Wild Badger describes the tool as ideal for small to medium yards, in the same listing that claims heavy-duty power for thick grass and branches. Those two claims pull against each other, and the narrower one is the one I'd weight. There's no published warranty term, and it sits in the most expensive price group while being the slowest seller of the four complete trimmers. **Pros:** - Four heads included: trimmer/edger, pole saw, hedge trimmer, brush cutter - Two 20V 4.0Ah batteries and charger in the box - Quick-connect head swapping claimed - Longest shaft here at 69 in **Cons:** - Listing itself calls it ideal for small to medium yards - No warranty term published - Premium price position, slowest-selling complete trimmer here - 15-inch swath, narrowest tier in this set [Check Price on Amazon](https://www.amazon.com/dp/B0F3C422K6?tag=udiwg-20) ## 7\. Kerlista Universal Flexible Shaft String Trimmer — Best budget pick **The cheapest way into a second trimmer arm, at 3 lb and with the broadest brand-fit claim here.** [![Kerlista universal flexible shaft trimmer attachment with rotating head — fits attachment capable units from many brands](https://m.media-amazon.com/images/I/31Ghprl4E0L._SL500_.jpg)](https://www.amazon.com/dp/B0B226HSDV?tag=udiwg-20) **Best for:** adding a trimmer arm to a shaft you already own **Skip it if:** you need a complete tool with a motor This is the cheapest of the seven and the lightest at 3 lb. It's also not a trimmer. It's an arm that plugs into a power head you already have, and it lives in the replacement parts category rather than the trimmer category. The compatibility claim is the widest in the set by a distance. Kerlista lists Ryobi, Greenworks, Remington, Craftsman, Yard Machines, Troy-Bilt, Yardman, Snapper, Bolens, Murray and Kobalt, plus most other major brands with attachment capable units. If your shaft is one of those, this is the low-cost route to a spare head. The party trick is the rotating head, adjustable through 0 to 90 degrees with a locking mechanism. That's edging along a drive without twisting your wrists, and none of the other picks publish an angle range. The build is described as high-strength aluminium alloy with a corrosion-resistant coating, and the handle is padded. Where it falls short is information. No cutting swath is published, so you can't compare its path to anything else here. No warranty term. And it's the slowest-moving item in this lineup by a wide margin, with a single seller listing it. **Pros:** - Cheapest pick in this set - 3 lb, lightest item here - 0 to 90 degree rotating head with a lock - Fit claimed across eleven named brands - Aluminium alloy with corrosion-resistant coating **Cons:** - No cutting swath published, so no path comparison possible - Not a working tool without a compatible power head - No warranty term stated - Slowest seller here, and only one seller lists it [Check Price on Amazon](https://www.amazon.com/dp/B0B226HSDV?tag=udiwg-20) ## Which attachment system are you actually buying into? Here's the trick with an attachment capable string trimmer for large yards: the shaft coupling decides your next five purchases, not this one. Read the compatibility sentence in each listing, because the wording differs sharply. Three levels of openness show up in this set: - **Single brand.** Greenworks says compatible Greenworks attachments. EGO names two specific power heads, the PH1400 and PH1420\. Buy in, stay in. - **Brand plus universal gas.** Both RYOBI picks claim Expand-It attachments *and* other universal gas attachments. That's the widest claim among the complete tools. - **Aftermarket universal.** The Kerlista arm names eleven brands and claims fit with most attachment capable units. The DEWALT sits between the first two: the listing calls the capability universal but names no other brands. If you plan to add a pole saw and an edger over the next two seasons, the RYOBI wording gives you the most places to shop. If you already own EGO or Greenworks gear, the single-brand lock costs you nothing and the EGO arm becomes the cheapest 16-inch swath in the set. ## Swath width, weight, and the trade-off nobody mentions Most guides in this category rank on voltage. Voltage tells you almost nothing here, because the two 60V tools sit at opposite ends of the price range and the 40V RY40205 is the only listing that publishes a runtime. The pair that actually decides it is swath width against weight. Wider cuts faster and drains the battery faster. Heavier holds a wider head steady and wears your arms out sooner. Lay the complete tools out and the pattern is clean: - Greenworks: 16 in swath, 18.7 lb - DEWALT: up to 17 in swath, 15 lb - RYOBI RY40250: up to 15 in swath, 13.9 lb - RYOBI RY40205: 15 in swath, 11 lb Every extra inch of path costs you weight, except in the DEWALT's case, which is the single strongest argument for its price position. Wider swath, lighter body. The attachment arms sit outside this table entirely, at 3.4 lb and 3 lb, because their weight excludes the motor and battery. Comparing the EGO's 3.4 lb to the Greenworks' 18.7 lb is not a fair fight. Add a power head and the numbers converge. ## What the listings leave out Five of these seven listings publish no warranty term. That's the single biggest gap in the data, and it's worth naming plainly: - **DEWALT DCST972X1**: 3 years on material and workmanship - **RYOBI RY40205**: 30-day limited - **EGO STA1600**: lifetime claimed on the carbon fiber shaft, per the listing copy - **Greenworks, RYOBI RY40250, Wild Badger, Kerlista**: nothing stated The rest of the missing information follows a pattern. Nobody except RYOBI publishes runtime under load. Nobody publishes decibel figures, and a 60V brushless trimmer running at full swath is not a quiet tool. Nobody states line diameter except DEWALT, which specifies 0.080 in dual line with 0.095 in also supported. Line gauge matters more than shoppers expect. Thicker line survives contact with fence posts and chain link; thin line snaps and you spend the afternoon reloading. If you trim along hard edges, the DEWALT is the only pick that tells you what it takes. Shaft length is published for all seven, which is more useful than it sounds. If you're over six feet, the 68.5 in Greenworks and 69 in Wild Badger will feel better than the 35.4 in RYOBI. ## When a different pick wins The Greenworks is my default, but four specific situations flip it. Each one is checkable before you buy. 1. **You already own an EGO PH1400 or PH1420.** Buy the STA1600 arm. You get the same 16-inch swath for the second-cheapest price here, and the carbon fiber shaft carries a lifetime warranty claim. 2. **You trim along fences, posts and hard edges.** The DEWALT is the only pick that publishes line gauge, and it takes 0.095 in line. That's the difference between one reload and five. 3. **Weight is the constraint, not power.** The RY40205 at 11 lb is 7.7 lb lighter than the Greenworks. If you already hold RYOBI 40V packs, the bare-tool price is the best deal in this set. If you don't, it isn't. 4. **You need a pole saw and a hedge trimmer too.** The Wild Badger kit includes four heads, two batteries and a charger. Just believe its own description of small to medium yards over its heavy-duty headline. One more threshold. If your shaft coupling already accepts universal attachments, the Kerlista arm at 3 lb costs less than any complete tool here and adds a 0 to 90 degree rotating head. Check your coupling against its eleven named brands first. ## The verdict The Greenworks ST60L413 is the best attachment capable string trimmer for large yards in this set, and the reasoning is short. A 16-inch fixed swath is the widest path among complete tools you can use straight out of the box, the brushless 60V motor is built for thick growth, and the included shoulder strap makes 18.7 lb workable rather than punishing. It's also the tool buyers choose most often among the complete trimmers here, at a mid-range price position. Two conditions flip that. If you trim against fence lines and posts, the DEWALT DCST972X1 wins on line gauge alone: 0.080 in dual line with 0.095 in supported, plus a 15 to 17 inch adjustable swath and a 3-year warranty no other complete tool matches. It's 3.7 lb lighter too. And if you already own an EGO Multi-Head power head, the STA1600 arm delivers the same 16-inch swath as the Greenworks for a fraction of the outlay, with a lifetime shaft warranty claim behind it. The Greenworks earns the default because it needs nothing else from you. No existing platform, no battery hunt, no compatibility check. That's worth a couple of pounds of extra weight. ## FAQ ### Is an attachment capable string trimmer worth the extra cost? An attachment capable string trimmer is worth it if you genuinely intend to add heads. One shaft that later takes a pole saw or edger saves storage space and a second motor. If you only ever trim grass, a sealed-shaft tool does the same job. The Wild Badger kit shortcuts the question by shipping four heads at once. ### Which is the best attachment capable string trimmer for large yards on a tight budget? For large yards on a tight budget, the answer depends on what you already own. The Kerlista arm is the cheapest item here at 3 lb, but it needs a compatible power head. The RYOBI RY40205 bare tool at 11 lb is next, and it publishes up to 71 minutes of runtime on a 4Ah pack, though the battery is separate. ### How wide a cutting swath do I actually need? The cutting swath you need scales with open ground. Wider paths clear more per pass: 16 inches beats 15 by 6.7% per sweep. The DEWALT's 17-inch setting is the widest published figure here. But wide swaths drain batteries faster, which is exactly why RYOBI offers a 13-inch setting for longer run time. ### Greenworks ST60L413 or DEWALT DCST972X1? Greenworks ST60L413 or DEWALT DCST972X1 comes down to warranty and line. The DEWALT publishes 3 years on material and workmanship, an adjustable 15 to 17 inch swath, two supported line gauges, and 15 lb versus 18.7 lb. The Greenworks counters with a fixed 16-inch path, an included shoulder strap and a lower price position. Heavy edge work favours DEWALT. ### What mistake do first-time buyers make in this category? The mistake first-time buyers make is skipping the compatibility line. Two picks here are attachment arms with no motor: the EGO STA1600 needs a PH1400 or PH1420 power head, and the Kerlista needs an existing attachment capable shaft. Neither cuts a blade of grass alone. Read what's included before you compare anything else. Start by checking what's already in your shed. If a compatible power head is sitting there, the EGO arm or the Kerlista shaft gets you a wider path for the least money in this lineup. If you're starting from nothing, the Greenworks ST60L413 is the one to order, because a 16-inch swath, a 60V brushless motor and a shoulder strap in the same box means one purchase and one afternoon of setup. Everything else in this set asks you to solve a compatibility puzzle first. The Greenworks just asks you to charge it. *Last updated: September 28, 2026\. Product availability re-checked.* *This page contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.*