Flex Impact Drivers
Flex is the newest serious contender in cordless tools, and its 24V impact drivers make big claims. Here is what the Quick Eject and compact models offer, what 24V really means and who should switch.
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The Flex impact driver to buy is the 24V Quick Eject model (FX1371A): Flex rates it at 2,500 in-lbs, 0-4,000 RPM and 0-4,450 IPM in a 4.7-inch body, with a collet that releases bits one-handed. The compact FX1331 suits lighter work. Flex 24V is the same voltage class as 18V and 20V Max, despite the name. Its strengths are power and warranty; its weaknesses are a heavier tool, a smaller tool range and fewer stores than the big brands.
On this page
Flex 24V impact driver lineup
Flex sells several brushless impact drivers on its 24V platform, from a compact model to the high-output Quick Eject driver. Flex publishes full specs for the Quick Eject model; for the others, the figures below come from retailer listings and published reviews, so check the current listing. Torque ratings are measured differently by each brand. Use them to compare within Flex, and with care across brands.
| Model | Type | Rated torque | Speed | Notes |
|---|---|---|---|---|
| FX1371A | Quick Eject, multi-mode | 2,500 in-lbs | 0-1,900/2,700/4,000 RPM | 0-4,450 IPM, 4.7 in, 2.7 lb bare (Flex specs) |
| FX1351 | Standard brushless | 1,800 in-lbs | 0-3,400 RPM | Original 24V driver; retailer specs |
| FX1331 | Compact | 1,700 in-lbs | 0-1,300/3,000 RPM | 2 speeds plus self-tapping; about 2.0 lb bare per reviews |
| FX1372 | One-Touch collet, newest | Check the current listing | Check the current listing | Successor to the FX1371 reported in late 2026 |
We could not find a current Flex impact driver sold under a Tool Connect name on Flex's own site. If you see one listed, confirm what the feature does on the product page before paying extra for it.
What 24V means on a Flex tool
Flex 24V packs contain the same number of lithium-ion cells as 18V and 20V Max packs from other brands. The difference is labeling: Flex quotes a higher maximum voltage. Under load, all of these packs run in the same voltage range. A Flex driver is not stronger because it says 24V. It is strong because Flex built a high-output motor and impact mechanism. See 18V vs 20V Max for how voltage labels work.
Flex's Stacked Lithium packs use stacked cell layouts and Flex's heat-management system. Flex claims more power, longer life and faster charging than its standard packs. These are manufacturer claims; the packs are also larger, which matters on a handheld driver.
The Flex Quick Eject impact driver
Flex 24V 1/4 in. Quick Eject Hex Impact Driver with Multi-Mode (FX1371A)
Best for: trades and heavy DIY users who drive long screws and lags all day.
- Torque
- 2,500 in-lbs
- Speed
- 0-1,900/2,700/4,000 RPM
- Impacts
- 0-4,450 IPM
- Length
- 4.7 in
- Weight
- 2.7 lb bare
On paper, this is one of the most powerful 1/4-inch impact drivers sold. It has three speed modes and self-tapping modes that slow the tool as a screw seats. The 4.7-inch length keeps it short despite the output. The Quick Eject collet is the feature people notice first.
Strengths
- Very high rated torque and speed
- One-handed bit changes
- Self-tapping modes for metal
- 5-year warranty with registration
Weaknesses
- 2.7 lb bare is heavy for an impact driver
- Large packs make it top-heavy overhead
- Fewer stores and accessories than the big brands
How Quick Eject works
A standard impact driver collet locks a bit with spring-loaded balls. To remove a bit, you pull the collar forward with one hand and pull the bit with the other. Flex's Quick Eject collet pushes the bit out when you release the collar, so you can drop a bit into your palm, insert a new one and keep the other hand on the work. Flex's newer FX1372 is reported to take this further with a One-Touch collet that ejects automatically.
It sounds minor until you swap between a drill bit and a driver bit dozens of times on a job. The trade-off is a slightly longer, more complex nose. Keep the collet clean, since sawdust and metal chips packed into any quick-release collet make bits stick or eject poorly. A shot of compressed air at the end of the day is enough. Quick Eject works with any standard 1/4-inch hex bit, so your existing impact-rated bits carry over. For background on collet types, see impact driver chucks and hex collets. If you are new to collets, how to put a bit in an impact driver covers the basics.
Compact option: FX1331
Flex 24V 1/4 in. Hex Compact Impact Driver (FX1331)
Best for: installers, cabinet work and overhead driving.
- Torque
- 1,700 in-lbs (listed)
- Speed
- 0-1,300/3,000 RPM
- Impacts
- up to 3,800 IPM
The FX1331 gives Flex users a lighter tool for everyday screws. Two speeds and a self-tapping mode cover most work. It runs on the same packs; pair it with a small 2.5 Ah pack to keep it light.
Strengths
- Much lighter than the FX1371A
- Two speeds plus self-tapping
Weaknesses
- No Quick Eject collet
- Specs mostly from retailers and reviews; check the current listing
Batteries and who Flex suits
Picking a pack for a Flex driver
Every Flex 24V pack fits every Flex 24V tool, so choose by weight. The FX1371A is already heavy for its class, and a big Stacked Lithium pack adds more at the base of the grip. For general driving, a 2.5 Ah standard pack keeps the tool balanced. Save the 6.0 Ah Stacked Lithium pack that ships in some FX1371A kits for saws, grinders and long decking days. Our impact driver battery guide explains why bigger is not always better on a driver.
Who should buy Flex
- Deck, fence and framing users: the FX1371A's power and speed shorten long screw runs.
- Metal and HVAC work: self-tapping modes help with tek screws.
- Buyers who change bits constantly: Quick Eject is the main reason to choose Flex over a similar-spec rival.
- Light DIY users: the FX1331 is plenty, or a budget platform may be enough.
- Trades needing niche tools: check that Flex makes every tool you need before switching.
Flex platform pros and cons
| Pros | Cons |
|---|---|
| Top-tier rated torque and speed | Heavier drivers than leading compacts |
| Quick Eject collet saves time | Smaller tool range and fewer accessories |
| Registered 5-year warranty on the FX1371A | Warranty terms have changed several times |
| Frequent promotions at Lowe's | Young platform: long-term support is less proven |
Flex makes sense for buyers who want maximum driving power and are happy with a growing, not yet complete, tool range. If you need specialty tools for a trade, compare the catalog against Milwaukee or DeWalt first. Our guide to choosing a cordless tool platform walks through the full decision, and the best impact drivers for professionals guide compares Flex with the leaders.
Register your Flex tools and batteries within 30 days, keep the receipt, and wear eye and hearing protection while driving. Finish any fastener with a torque spec using a torque wrench.
Verdict
The Flex FX1371A is one of the most powerful impact drivers sold, and its Quick Eject collet is a genuine everyday improvement. The compact FX1331 covers lighter work. The weaknesses are weight, a smaller tool range and a young platform. Buy Flex if raw driving power and the warranty matter most to you; choose a larger platform if you need the widest catalog.
Frequently asked questions
Who owns Flex power tools?
Flex is a German-founded brand now owned by Chervon, a large tool maker that also builds EGO outdoor tools. The Flex 24V cordless platform launched in the US in 2021 and is sold mainly through Lowe's and tool dealers.
Is Flex better than Milwaukee or DeWalt?
Flex's top driver has a higher torque rating than Milwaukee's or DeWalt's flagships, but each brand measures torque differently. Flex is competitive on performance and warranty. Milwaukee and DeWalt still offer far larger tool ranges, more accessories and wider retail availability.
Do Flex 24V batteries fit other brands?
No. Flex 24V packs fit only Flex 24V tools. The Stacked Lithium packs and standard packs are interchangeable within Flex's 24V range, but not with Chervon's other brands such as EGO.
What is the Flex warranty?
Flex's FX1371A page lists a 5-year limited warranty if you register within 30 days of purchase and 3 years without registration. Earlier lifetime warranty offers had registration deadlines that have passed. Check flexpowertools.com for the current terms before buying.
Is Flex 24V more powerful than 18V?
Not because of the voltage. Flex 24V packs use the same cell count as 18V and 20V Max packs. Flex rates its maximum voltage differently. Performance comes from the motor, electronics and gearing, not the number on the label.