String Edger vs Blade Edger: Which One Should You Buy?
String edgers and blade edgers compared on cutting heads, power, pack sizes and upkeep, with 4 examples from the listings and a verdict on which side fits your property.
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Verdict: Choose a string edger if your work is grass and weeds along beds, fences and walks, and you want a cordless tool that switches between trimming and edging. Choose a blade edger if you want a crisp groove along driveways and sidewalks and already own a compatible edger, since the blade packs here supply blades only.
A property with beds, walks and a driveway puts different kinds of edge work in front of you. Grass creeps across the lawn edge, and the border along concrete needs a clean line. The string edger vs blade edger question comes down to which cutting head suits each edge. This comparison walks through each side, then looks at examples from the listings.
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Glenvera 20V 12in Cordless String Trimmer and Edger
A 20V cordless 2-in-1 string trimmer and edger with a 12-inch cutting swath, a motor rated up to 9000 RPM, two 20V 4.0Ah batteries, a charger and 8 spool lines, with up to 60 minutes of runtime and coverage up to 1/4 acre on a single charge.
Read the full review
The Glenvera tool is a cordless 2-in-1 trimmer and edger: a 20V platform with a motor rated up to 9000 RPM, a 12-inch cutting swath and an automatic line feed system. The kit includes two 20V 4.0Ah batteries, a charger and 8 spool lines, with up to 60 minutes of runtime and coverage up to 1/4 acre on a single charge. The head adjusts across 4 positions and the handle rotates 180 degrees. Two points in the listing read against each other: the title calls the tool a Grass Mover, while the bullets describe a string trimmer and edger, and the bullets name the tool YDLawn while the title names Glenvera. The bullets give the fuller account, so this review follows them.
Pros
- Switches between trimming and edging with the push of a button
- Two 20V 4.0Ah batteries and a charger in the box
- Automatic line feed keeps the line at cutting length
- 4-position adjustable head and 180-degree rotating handle for tight spots
Cons
- The listing names grass, weeds and lawn borders as its work, so woody growth is outside what it states
- Bullets name the tool YDLawn while the title names Glenvera
- Weight is not stated on the listing
- Warranty is not stated on the listing
Arnold Maxi-Edge .08-Inch x 140-Foot Trimmer Line
Commercial grade .080-inch trimmer line in a 140-foot pack with 7 refills and a cutting tool, made to fit most straight and curved shaft string trimmers.
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The Arnold pack is trimmer line, not a tool: .080-inch Maxi-Edge line, 140 feet in total, with 7 refills and a cutting tool in the pack, stated to fit most straight and curved shaft string trimmers. The pack count reads two ways: the bullets say the pack contains 7 refills, while the spec table lists a pack of 1 with a NumberOfItems of 1. The bullets give the fuller account of what arrives, so this review follows them.
Pros
- 140 feet of line across 7 refills
- Cutting tool included in the pack
- Fits most straight and curved shaft string trimmers (stated)
- .080-inch line for grass and weeds along edges
Cons
- Line only, no edger tool or blade in the pack
- Pack count reads two ways: 7 refills in the bullets against a spec table pack of 1
- Diameter is fixed at .080 inch, so heads that need a different size cannot use it
- Only the line is supplied, so a worn head or guard still needs its own replacement
Karbay 613223 Edger Blades, 5 Pack
A 5 pack of high-carbon steel edger blades, 8 inches on the diagonal and 2 inches wide with a 1-inch center hole and 0.11-inch thickness, with split pins included, made to fit Ryobi, Echo, Stihl, Maruyama and Green Machine edgers.
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The Karbay pack supplies edger blades and nothing else: 5 blades in high-carbon steel, 8 inches on the diagonal and 2 inches wide, with a 1-inch center hole and 0.11-inch thickness. The painted finish is stated to guard against rust and harsh outdoor weather, and split pins in different sizes are included. The listing names Ryobi, Echo, Stihl, Maruyama and Green Machine edgers, plus Troy-Bilt, Craftsman and Cub Cadet models.
Pros
- 5 blades in the pack, so spares are on hand
- High-carbon steel with a painted finish against rust
- Split pins in different sizes included
- Fits a long list of Ryobi, Echo, Stihl, Maruyama and Green Machine edgers
Cons
- Blades only, no edger tool in the pack
- Host edger must match the 1-inch center hole and the listed models
- Warranty is not stated on the listing
- Weight is not stated on the listing
Geosiry Edger Blades, 3 Pack
A 3 pack of carbon steel edger blades, 8 inches long and 2 inches wide with a 1-inch center hole and 0.12-inch thickness, with a rust-resistant coating, made to fit Stihl, Ego, Echo, Ryobi, Kobalt, Maruyama and Green Machine edgers.
Read the full review
The Geosiry pack supplies edger blades and nothing else: 3 blades in carbon steel, 8 inches long and 2 inches wide, with a 1-inch center hole and 0.12-inch thickness. The exterior carries a rust-resistant coating, stated to hold up even in harsh weather. The listing names Stihl, Ego, Echo, Ryobi, Kobalt, Maruyama and Green Machine edgers.
Pros
- 3 blades in the pack
- Carbon steel with a rust-resistant coating
- Fits Stihl, Ego, Echo, Ryobi, Kobalt, Maruyama and Green Machine edgers
- 1-inch center hole as stated in the title
Cons
- Blades only, no edger tool in the pack
- Split pins are not stated in the listing
- Warranty is not stated on the listing
- Weight is not stated on the listing
String edger vs blade edger side by side
| Factor | Glenvera 20V 12in | Arnold Maxi-Edge | Karbay 613223 5-Pack | Geosiry 3-Pack Blades |
|---|---|---|---|---|
| Side | String edger | String edger | Blade edger | Blade edger |
| What it is | Cordless trimmer and edger tool | Trimmer line refill pack | Edger blade pack | Edger blade pack |
| Cutting head | Line, automatic feed | .080-inch line | Steel blade, 0.11-inch thick | Steel blade, 0.12-inch thick |
| Size | 12-inch cutting swath | 140 feet of line | 8 inches diagonal, 2 inches wide | 8 inches long, 2 inches wide |
| Power | 20V battery, up to 9000 RPM | No motor, line only | No motor, host edger supplies power | No motor, host edger supplies power |
| Pack | 2 batteries, charger, 8 spool lines | 7 refills, cutting tool | 5 blades, split pins | 3 blades |
| Upkeep | Charge batteries, replace line | Replace line as it wears | Swap blades when worn | Swap blades when worn |
| Warranty | Not stated | 3 months | Not stated | Not stated |
| Acre Score | 57 | 55 | 54 | 51 |
Figures are manufacturer stated for the examples, collected 2 November 2026.
Cutting head: line or blade
A string edger spins line. The Glenvera listing describes trimming around obstacles and reaching tight spaces, and line wears down as it works, so it needs refills. It cannot carve the same crisp groove along concrete that a steel blade leaves.
A blade edger spins a steel blade. The Karbay and Geosiry packs here carry blades 8 inches across and 2 inches wide with a 1-inch center hole, made to mount on a host edger. A blade holds a straight line along hard borders, but it mounts only on a matching host edger.
Power and runtime
The string side has the only motor in this comparison. The Glenvera example runs on a 20V battery platform with a motor rated up to 9000 RPM, two 20V 4.0Ah batteries and a charger, with up to 60 minutes of runtime and coverage up to 1/4 acre on a single charge. You charge, clip in and go, with no fuel to mix.
The blade side has no motor of its own. Blade packs and line packs carry no power figure, because the host tool supplies the power. The Arnold line pack is a refill: it keeps a string trimmer cutting, but it adds no runtime and no motor. With blade packs, the power question becomes whether your host edger matches the blade mount.
What each side can cut
The string side handles grass and weeds and edging along lawn borders. The Glenvera listing states grass, weeds and lawn borders as its work, with a 12-inch cutting swath. The Arnold line, at .080 inch, is refill line for string trimmers, and it fits most straight and curved shaft string trimmers.
The blade side is for edges where a steel edge holds a clean line. The Karbay listing states driveways, sidewalks and flower beds as its ground, and the Geosiry listing states a rust-resistant coating for use even in harsh weather. Neither blade listing states a cutting swath or a motor figure, so the comparison cannot rank the sides on power, only on the edge each one leaves.
Handling and weight
The Glenvera listing calls its design lightweight, with a 4-position adjustable head and a 180-degree rotating handle for reaching tight spaces and trimming around obstacles. The Arnold pack is light in a different way: its spec table lists 0.03 pounds, a pack figure rather than a tool weight. Neither blade listing states a weight, so mount fit is the figure to check there.
Upkeep
The Glenvera example needs charged batteries and fresh line. Its kit answers the line question with automatic feed and 8 spool lines, and the Arnold pack answers it with 140 feet of line across 7 refills plus a cutting tool. A blade edger needs blades swapped when worn: the Karbay pack holds 5 blades with split pins, and the Geosiry pack holds 3 blades with a rust-resistant coating. Neither blade listing states a warranty, and only the Arnold pack states a warranty term, at 3 months.
The 4 examples
Acreage and terrain fit
Glenvera 20V 12in
Arnold Maxi-Edge
Karbay 613223 5-Pack
Geosiry 3-Pack Blades
Matching It to Your Property
- Flat lawns with beds and walks suit the Glenvera tool, with its 12-inch swath and edging mode.
- Properties with long concrete borders suit a blade pack, provided the host edger matches the 1-inch center hole and the listed models.
- Tight spots around obstacles suit the Glenvera handle, which rotates 180 degrees with a 4-position head.
- The Geosiry pack measures 8.0 inches x 3.0 inches x 1.2 inches in its spec table, so it stores in a small space.
The Acre Score explained
The Acre Score weighs five factors: performance (power and heads), build quality (materials and finish), value (what comes in the box), safety (controls the listing states) and warranty (term and coverage). A factor the listing does not state scores zero, which is why the blade packs score zero for warranty and all four examples score zero for safety.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Glenvera 20V 12in | 9.4 | 28 | 20 | 21 | 0 | 0 |
| Arnold Maxi-Edge | 9.3 | 22 | 19 | 20 | 0 | 2 |
| Karbay 613223 5-Pack | 9.3 | 24 | 20 | 21 | 0 | 0 |
| Geosiry 3-Pack Blades | 9.3 | 23 | 20 | 19 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
For a property with both soft edges and concrete borders, the two sides cover different jobs: a cordless string tool for edges near the house, and blade packs for the concrete borders. For more trimming gear, see our trimmers and blowers category.
Wear eye and hearing protection, long pants and sturdy footwear, and keep bystanders well back while the line or blade spins. Clear stones and debris first, and stop the engine or remove the battery before clearing the head. Refuel only with the engine off and cool. See OSHA landscaping safety. Read our Safety Disclaimer.
FAQ: mowing large lots
Can a string edger cut along a driveway?
A string edger trims grass and weeds along borders, walks and beds. For a crisp groove along a driveway or sidewalk, use a blade pack: the Karbay listing states driveways and sidewalks as its ground.
Do edger blades fit any edger?
No. Match the 1-inch center hole and the compatibility list on the blade pack. The Geosiry pack lists Stihl, Ego, Echo, Ryobi, Kobalt, Maruyama and Green Machine edgers. The Karbay pack lists Ryobi, Echo, Stihl, Maruyama and Green Machine edgers, plus Troy-Bilt, Craftsman and Cub Cadet models.
How long does the Glenvera battery last?
Up to 60 minutes of runtime and coverage up to 1/4 acre on a single charge, per the listing. The kit includes two 20V 4.0Ah batteries and a charger.
What line size does the Arnold pack suit?
The Arnold pack carries .080-inch line, 140 feet across 7 refills, with a cutting tool included. The listing states it fits most straight and curved shaft string trimmers.
Do blade packs include the edger tool?
No. Blade packs supply blades only, and the host edger supplies the power. The Karbay pack includes split pins in different sizes. The Geosiry pack does not state split pins.
