4 Best GardenTrax Garden Augers in 2026
Four GardenTrax earth auger picks compared: single and double spiral bits plus 43cc and 52cc powerheads, with the 7/8 inch shaft fit explained.
At a Glance
GardenTrax is not a cordless-drill planting brand. Its earth auger lineup is built around a 7/8 inch drive shaft, which means the bits connect to a gas powerhead rather than a household drill chuck. That single fact reshapes the whole buying decision, because the bit, the powerhead, and the hole you want all have to line up before any digging starts.
We evaluated four distinct GardenTrax products based on product specs and buyer feedback: the single spiral earth auger bit, the double spiral bit, and two one-person powerheads at 43cc and 52cc. Size variants of the bits are treated as one pick each, so the single spiral family covers 2, 3, 12, and 14 inch diameters, and the double spiral family covers 8 and 10 inch versions. A replacement 8 inch blade is sold separately and is not a standalone auger, so it is left out.
If you came looking for a bit that clamps into a cordless drill, read the fit section first, because these are not that.
6 Criteria to Look For Before Buying a GardenTrax Garden Auger
Key buying criteria so you get the right fit the first time.
Shaft size and compatibility
The shaft is the first thing to confirm, because every GardenTrax bit here uses a universal 7/8 inch round drive shaft. The single spiral bit and double spiral bit fit any power auger that accepts that size, and both powerheads, the 43cc and 52cc, use a 7/8 inch connection. These do not fit a household drill chuck, which is the most common mistake. If you want a drill-driven bit, look at 3/8 inch hex garden augers instead. Mixing the two systems is the most common reason a bit gets returned.
Bit diameter and hole use
Diameter should match the job. The single spiral bit comes in 2 and 3 inches for small posts and plantings, and 12 and 14 inches for trees. The double spiral bit comes in 8 and 10 inches for larger holes. A hole that is too big wastes backfill, while one that is too small crowds roots or jams a post. Measure the root ball or post before buying, and add a couple of inches of clearance. The 14 inch single spiral and 10 inch double spiral overlap in use, so pick by how many holes you dig.
Engine size and torque
Torque comes from displacement. The 52cc powerhead has more reserve for wide bits like the 10 inch double spiral, while the 43cc powerhead suits 2 and 3 inch single spiral bits and smaller jobs. A weak engine bogs down in clay and leaves you fighting the tool. Match the engine to the largest bit you plan to use, not the average. In practice, the 43cc is a comfortable fit for the 2 and 3 inch bits, while the 52cc is the safer match for the 12 and 14 inch single spiral and 10 inch double spiral.
Single versus double spiral
A single spiral, like the GardenTrax single spiral bit, offers the widest range of sizes and a simple design. A double spiral, like the GardenTrax Double Spiral bit, carries soil along two flutes for faster clearing in large holes. Double spiral needs more torque, so pair it with the 52cc powerhead. Choose by hole size and frequency. If you dig only a few large holes, the single spiral's flexibility usually matters more than the double spiral's speed.
Handling and operator comfort
A powerhead twists hard if the bit catches a root, so grip design matters. The 43cc model has comfortable foam grip handles, and both powerheads are one-person tools. Hold the machine with both hands and a wide stance, and never lean over the bit. If you have limited strength, avoid the largest diameters, since a 14 inch bit that catches a root can yank the whole machine sideways. The 43cc with its foam grips is the more forgiving of the two over a long session.
Upkeep and storage
Two-cycle engines need fuel mixing, air filter care, and dry storage, and bits need rinsing and drying. The 36 inch bits take wall space, and replacement blades are sold for the 8 inch auger. Plan where the tool lives before you buy. A gas tool you cannot store properly will not last, and a bit left caked with clay will rust faster. Rinse the 8 and 10 inch double spiral bits especially well, because soil packs between the flutes.
4 Best GardenTrax Garden Augers in 2026
GardenTrax Earth Auger Spiral Bit (36 Inch)
About this pick
The GardenTrax single spiral bit is the core product in the lineup, offered in diameters from 2 inches up to 14 inches while keeping a 36 inch overall length. It is built from heavy-duty, high-strength steel that the maker says resists bending and breaking during constant drilling. The drive is a universal 7/8 inch round shaft, so it fits any power auger or powerhead that accepts that size.
The range of diameters is its biggest advantage. A 2 or 3 inch bit suits fence posts, small plantings, and bulb-sized holes. A 12 or 14 inch bit moves into tree-planting and large post territory, where a hand tool would take an afternoon. The listing describes uses from gardening to large fencing projects. The tradeoff is that the bit does nothing alone: you need a compatible powerhead, and the larger diameters demand a stronger engine and a steady stance.
In ownership, the 36 inch body takes wall space, and the flighting must be cleared of soil between holes. Compared with the double spiral bit, it is the simpler, more adaptable choice, and paired with the 52cc powerhead it has the muscle to handle its wider sizes. Match the diameter to your job rather than buying the biggest, because bigger bits twist harder if they catch a root.
Best for: Gardeners and fence builders who own or plan to buy a 7/8 inch powerhead.
Check price on AmazonSpecs
- Diameters offered: 2, 3, 12, and 14 inches
- Overall length: 36 inches
- Drive: Universal 7/8 inch round shaft
- Material: Heavy-duty, high-strength steel
Pros
- +Offered from 2 to 14 inches to match many holes
- +Heavy-duty steel is meant to resist bend and breakage
- +Universal 7/8 inch shaft fits compatible power augers
- +Thirty-six inch length reaches depth for posts and trees
Cons
- −Needs a 7/8 inch powerhead and will not fit a drill chuck
- −Large diameters twist hard if the tip catches roots
GardenTrax Double Spiral Earth Auger Bit
About this pick
The GardenTrax double spiral bit is the larger-hole specialist, offered as an 8 by 31 inch version and a 10 by 36 inch version. It uses a double spiral design, which means two flutes carry soil up and out, and it keeps the same universal 7/8 inch round drive shaft as the rest of the line. The listing points it at planting trees, gardening, and fencing projects.
A double spiral generally clears a hole faster than a single flute because soil is lifted by two paths, and that is its main draw for people digging many large holes. It also tends to feel more balanced as it turns, since the cutting load is shared. The tradeoff is torque: an 8 or 10 inch bore is a demanding load, so you need a strong powerhead and a firm two-handed hold. It also loses flexibility, since the sizes stop at 8 and 10 inches.
Ownership is straightforward. It rinses off like any auger and needs a dry place to store, and the 31 or 36 inch length takes space. Compared with the single spiral bit, it focuses on large, fast holes rather than variety, and it pairs best with the 52cc powerhead for the 10 inch version. If your jobs are mostly tree planting or wide holes, this is the sensible bit to add.
Best for: Tree planting and wide holes where a double spiral clears soil faster.
Check price on AmazonSpecs
- Sizes offered: 8x31 and 10x36 inches
- Design: Double spiral
- Drive: Universal 7/8 inch round shaft
- Uses: Planting trees, gardening, fencing
Pros
- +Double spiral lifts soil along two flutes
- +Eight and ten inch sizes suit trees and larger posts
- +Same 7/8 inch shaft as the other GardenTrax parts
- +Balanced load is steadier as the bit turns
Cons
- −Eight and ten inch bores demand a strong powerhead
- −Fewer diameter choices than the single spiral bit
GardenTrax 52cc 1-Person Earth Auger Powerhead
About this pick
The GardenTrax 52cc powerhead is the engine that makes the bit lineup useful. It runs a 52cc 2-cycle engine, is designed for one-person operation, and connects to an auger through a 7/8 inch shaft. The maker describes outstanding power, durability, and efficiency in a lightweight, heavy-duty construction.
The extra displacement over the 43cc model matters most with big bits and hard ground. A 52cc engine has more torque reserve to keep a 10 inch double spiral turning in clay, and it recovers faster when the bit slows. The tradeoff is weight and noise, since any 2-cycle engine means mixing fuel, pull-starting, and handling vibration. It is also a one-person tool, so you hold it yourself and need the strength to resist the twist if the bit grabs.
Ownership includes fuel mixing, air filter care, and storing the engine safely, which is more upkeep than a cordless drill. Compared with the 43cc powerhead, it handles larger bits with more confidence, and compared with the double spiral bit, it is the necessary partner for the 10 inch size. If you plan on regular tree planting or fence work, this is the powerhead to choose.
Best for: People digging large or frequent holes who need extra torque.
Check price on AmazonSpecs
- Engine: 52cc 2-cycle
- Operation: One person
- Connection: 7/8 inch to auger
- Build: Lightweight, heavy-duty
Pros
- +Fifty-two cc has more torque reserve for big bits
- +One-person design with a 7/8 inch auger connection
- +Lightweight, heavy-duty build per the maker
- +Pairs with every GardenTrax bit in this guide
Cons
- −Two-cycle engine needs fuel mixing and upkeep
- −More weight and noise than a cordless drill
GardenTrax 43cc 1-Person Earth Auger Powerhead
About this pick
The GardenTrax 43cc powerhead is the smaller sibling, designed for one-man operation with comfortable foam grip handles. Its 43cc 2-cycle engine provides enough power for light to medium work, and it uses the same 7/8 inch connection as the rest of the line. The listing keeps the claims simple, focusing on power and handling.
The comfort feature matters because an auger puts steady vibration and twist through your hands. Foam grips reduce fatigue over a long session, and the lower displacement usually means a lighter, easier tool to carry. The tradeoff is that 43cc has less torque, so a 10 inch double spiral in clay can bog it down. It suits the smaller diameters of the single spiral family far better than the biggest bits.
Ownership is the same as any 2-cycle: mix fuel, check the air filter, and store it empty and dry. Compared with the 52cc, it is easier on your hands and arms but less capable with wide holes, and compared with the single spiral bit in 2 or 3 inch sizes, it is more than enough. If your jobs are fence posts and small plantings, this powerhead is the practical choice.
Best for: Smaller bits, fence posts, and gardeners who want a lighter, easier tool.
Check price on AmazonSpecs
- Engine: 43cc 2-cycle
- Operation: One man
- Handles: Comfortable foam grips
- Connection: 7/8 inch drive
Pros
- +Foam grip handles reduce hand fatigue on long sessions
- +Forty-three cc is lighter and easier to carry than larger engines
- +Same 7/8 inch connection as every other GardenTrax bit
- +Enough power for 2 and 3 inch bits
Cons
- −Less torque for 10 and 14 inch bits in clay
- −Two-cycle engine still needs fuel mixing and upkeep
How We Evaluated These GardenTrax Garden Augers
Each pick was assessed across 5 criteria weighted for real-world use.
Fit and compatibility
We checked the shaft and connection on every listing. All GardenTrax bits use a universal 7/8 inch round drive, and both powerheads connect at 7/8 inch. We scored each pick on how clearly the listing states that fit, and we noted that none are drill-chuck compatible. The single spiral bit leads this category because its listing repeats the 7/8 inch fit in every size, while the double spiral listing states it more briefly.
Hole size range
Based on product specs, we compared the diameters offered. The single spiral bit leads on range with 2, 3, 12, and 14 inch sizes, and the double spiral bit leads on large holes at 8 and 10 inches. The powerheads were scored on which bit sizes they can realistically turn.
Power and torque
We reviewed engine sizes against bit diameters. The 52cc powerhead leads for wide bits and hard soil, while the 43cc powerhead suits smaller diameters. Picks that match power to the sizes they claim to serve scored higher. Because the listings give engine size but no torque figures, we did not invent numbers and judged by displacement alone.
Handling
We considered weight, grips, and one-person operation. The 43cc powerhead lists comfortable foam grips, and both engines are described as one-person tools. Long 31 and 36 inch bits add leverage that we weighed in the handling score.
Upkeep and durability
We looked at steel, engine care, and storage. The bits are heavy-duty steel meant to resist bending, while the 2-cycle powerheads need fuel mixing and filter care. Replacement blade availability for the 8 inch auger counted as a small bonus for longevity.
How to Choose the Right GardenTrax Garden Augers
By Hole Size
Hole size drives both the bit and the engine you need.
| Hole | Pick | Why |
|---|---|---|
| Small posts and plantings | GardenTrax Earth Auger Spiral Bit (36 Inch) | Offered in 2 and 3 inch diameters |
| Trees and large posts | GardenTrax Earth Auger Spiral Bit (36 Inch) | Offered in 12 and 14 inch diameters |
| Wide holes, fast clearing | GardenTrax Double Spiral Earth Auger Bit | Eight and ten inch double spiral design |
| Large bits, hard soil | GardenTrax 52cc 1-Person Earth Auger Powerhead | More torque reserve for wide bores |
| Small bits, light work | GardenTrax 43cc 1-Person Earth Auger Powerhead | Enough power for 2 and 3 inch bits |
Buy the powerhead for your biggest bit, not your smallest. A 52cc engine will happily turn a 2 inch bit, but a 43cc engine will struggle with a 14 inch one. Because every part shares the 7/8 inch connection, you can start with one powerhead and add bits later without replacing anything.
By Budget
We use relative tiers, with no dollar figures.
| Tier | Pick | What you get |
|---|---|---|
| Entry | GardenTrax Earth Auger Spiral Bit (36 Inch) | A single bit if you already own a compatible powerhead |
| Entry | GardenTrax 43cc 1-Person Earth Auger Powerhead | A lighter engine for small jobs |
| Mid | GardenTrax Double Spiral Earth Auger Bit | A large-hole bit that needs a powerhead |
| Premium | GardenTrax 52cc 1-Person Earth Auger Powerhead | More torque for wide bits and hard soil |
A bit without a powerhead, or the reverse, is a purchase that sits idle. If you already own a 7/8 inch power auger from another brand, the GardenTrax bits should fit it, so you may only need the bit. Confirm the shaft size on your own machine before ordering anything.
Single Spiral vs Double Spiral
The flute design changes how soil leaves the hole.
Single spiral
One flute carries soil upward, and the design is simple and available in the widest range of sizes. The GardenTrax Earth Auger Spiral Bit (36 Inch) fits here, from 2 to 14 inches. It needs less torque at small sizes. Choose this side for variety.
Double spiral
Two flutes lift soil along two paths, clearing large holes faster and running more balanced. The GardenTrax Double Spiral Earth Auger Bit fits here, at 8 and 10 inches. It needs a stronger engine. Choose this side for large, repeated holes.
By Engine Size
Engine size caps the largest bit you should use.
| Engine | Pick | Reason |
|---|---|---|
| 43cc | GardenTrax 43cc 1-Person Earth Auger Powerhead | Best with 2 and 3 inch bits |
| 43cc, light soil | GardenTrax Earth Auger Spiral Bit (36 Inch) | Small sizes keep load low |
| 52cc | GardenTrax 52cc 1-Person Earth Auger Powerhead | Handles wider bits with more torque |
| 52cc, wide holes | GardenTrax Double Spiral Earth Auger Bit | Eight and ten inch bores need real power |
| Either engine | GardenTrax Earth Auger Spiral Bit (36 Inch) | Shares the 7/8 inch connection |
Do not pair a 14 inch bit with the smaller engine and expect good results. If the engine bogs down, lift the bit, clear the flutes, and restart rather than forcing it. Pushing a small engine past its limit shortens its life and makes the tool harder to control.
For Planting Trees Specifically
Tree holes are where these bits earn their keep.
Look for
A diameter a bit wider than the root ball, a depth that matches it, and an engine with torque to spare. Check for buried utilities and clear soil often. Hold the machine with both hands.
In this comparison
The GardenTrax Double Spiral Earth Auger Bit and the 12 or 14 inch GardenTrax Earth Auger Spiral Bit suit tree holes. Pair either with the GardenTrax 52cc 1-Person Earth Auger Powerhead for the best results.
When to Spend More
A bigger purchase should match a bigger job.
| Spend more if | Save if |
|---|---|
| You dig 10 inch holes and want the GardenTrax 52cc 1-Person Earth Auger Powerhead | You only dig small holes, so the GardenTrax 43cc 1-Person Earth Auger Powerhead is enough |
| You dig many wide holes and want the GardenTrax Double Spiral Earth Auger Bit | You dig a variety of sizes and the GardenTrax Earth Auger Spiral Bit (36 Inch) covers them |
| You plant trees often and want the 52cc engine | You plant occasionally and want to avoid gas tool upkeep |
If you only dig a few holes a year, renting a powerhead can beat owning one. In that case you might buy just the bit you need and borrow the engine. Owning pays off when you dig regularly and are willing to keep up with fuel, filters, and storage.
Frequently Asked Questions
Will GardenTrax augers fit my cordless drill?
No. The GardenTrax bits use a universal 7/8 inch round drive shaft, which fits power augers and powerheads rather than a household drill chuck. Even the 2 inch single spiral bit shares that shaft, so small size does not mean drill compatible. If you want a drill-driven bit, look at 3/8 inch hex garden augers instead. Check the shaft size before you buy.
Which powerhead should I choose, 43cc or 52cc?
The 43cc suits small bits and light work and has comfortable foam grips. The 52cc has more torque for wide bits and hard soil. If you plan to use an 8 or 10 inch double spiral, choose the 52cc so the engine does not bog down. For 2 and 3 inch single spiral bits, the 43cc is enough and is easier on your hands.
What is the difference between single and double spiral?
A single spiral has one flute and is offered in the widest range of sizes, from 2 to 14 inches in the GardenTrax line. A double spiral has two flutes, clearing soil faster in large holes, and GardenTrax offers it at 8 and 10 inches. The double spiral version needs more torque, so it pairs best with the 52cc powerhead. Choose by hole size and how many holes you dig.
Can one person safely run a powerhead?
Both powerheads are described as one-person tools, but the twist from a caught bit is real. Hold the machine with both hands, brace your stance, and be ready to release the throttle the moment the bit stops turning. Avoid the 12 and 14 inch single spiral sizes and the 10 inch double spiral if you lack the strength to resist that torque. Wear eye and ear protection, and keep your feet clear of the bit when you lift it out.
Do I need to mix fuel for these powerheads?
Yes, a 2-cycle engine such as the 43cc or 52cc needs a measured fuel and oil mix, so follow the manual for the exact ratio. Use fresh fuel, because old gasoline causes hard starting and gummed carburetors. Empty the tank before long storage, such as over winter. Keep the air filter clean, since dust and soil kicked up by augering clogs it quickly.
Can I replace a worn auger blade?
GardenTrax sells a replacement blade for its 8 inch earth auger, which the listing describes as heat-treated and wear resistant. That helps extend the life of an 8 inch bit instead of replacing the whole tool. Availability for other sizes depends on their own parts, so check before you assume a blade exists. Dull blades slow the dig and push more strain onto the engine.
Is a gas auger worth it for a few holes?
Usually not. A gas powerhead costs more than a hand tool and needs fuel, filter care, and dry storage. For a handful of small holes, a drill-driven garden bit or a manual digger may be easier. Renting or borrowing a unit is smarter for a one-time fence or tree job. Buy the powerhead only if you expect to dig regularly.
Bottom Line
best overall: GardenTrax Earth Auger Spiral Bit (36 Inch) - best overall pick in this roundup.
See the full rankings above for all picks with pros, cons, and best-for summaries.
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