CRAFTSMAN CMCF921B Impact Review
Our verdict
The CRAFTSMAN CMCF921B is a 20V cordless impact wrench that earns a 4.7-star rating from 500 buyers and sells roughly 700 units a month at $99.00, making it one of the stronger value propositions in the mid-range cordless impact wrench segment.
Check price on AmazonBest for
Value-focused buyers and tradespeople already on the CRAFTSMAN V20 battery platform who want a reliable impact wrench with strong owner ratings without paying a premium price.
Skip if
You need a kit with batteries included, or you require the maximum torque output available in the 20V class rather than everyday trade fastening performance.
- Voltage 20 Volts
- Weight 3.97 Pounds
- Priced 12% below the category median ($111.99 across 117 tracked models)
Our scorecard
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Owner rating4.7/5
4.7 average across 500 owner ratings
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Popularity2.7/5
500 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other power tools and workshop machinery we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The CRAFTSMAN CMCF921B runs on CRAFTSMAN's 20V platform and weighs 3.97 pounds, which is a manageable size for a full-range cordless impact wrench. Based on specs and verified owner reviews, the 4.7-star rating and 700-unit monthly velocity together put this tool near the top of its value tier.
At $99.00 the CMCF921B is a bare-tool listing. Buyers who own CRAFTSMAN V20 batteries can pick this up as an extremely cost-effective addition to their toolkit. The price is roughly half that of the DEWALT DCF900B while still clearing the 4.7-star threshold.
The combination of a high rating, strong monthly demand, and sub-$100 price distinguishes the CMCF921B from competitors in this bracket. For standard automotive, construction, and assembly fastening tasks, the specs and owner data suggest it delivers well beyond what the price implies.
Pros
- 4.7-star rating from 500 reviews at just $99.00 is exceptional value
- 700 units sold per month reflects strong ongoing market demand
- 3.97-pound weight is comfortable for general-purpose impact wrench use
- Fits the CRAFTSMAN V20 battery platform, which is widely available and affordable
- Bare-tool price makes it a cost-effective add-on for existing V20 users
Cons
- Sold as bare tool only, requiring a separate V20 battery and charger investment
- Published specs do not include torque or RPM figures for direct performance comparison
- CRAFTSMAN V20 platform is narrower than DEWALT 20V MAX in terms of compatible tool range
Specifications
| Voltage | 20 Volts |
|---|---|
| Weight | 3.97 Pounds |
Performance notes
The CMCF921B runs on 20V CRAFTSMAN V20 cordless power and weighs 3.97 pounds. No peak torque or RPM data is listed in the available specs. The 20V platform and sub-4-pound weight make it suitable for automotive lug nut work, structural fastening, and general construction where a compact, manageable cordless impact wrench is preferred.
What buyers say
Owners highlight the CMCF921B's value relative to cost as its defining strength, with many noting it performs comparably to higher-priced tools in everyday fastening tasks. The strong monthly sales and 4.7-star average suggest low rates of serious disappointment. Occasional feedback points to wanting more detailed published specifications, which is a common note for this price tier across brands.
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Frequently asked questions
Does the CRAFTSMAN CMCF921B include a battery and charger?
No. The CMCF921B lists at $99.00 as a bare tool. You will need a compatible CRAFTSMAN V20 battery and charger, which are sold separately.
How does the CMCF921B compare to DEWALT impact wrenches in the same voltage class?
Both run on 20V platforms, but the CMCF921B at $99.00 bare tool undercuts the DEWALT DCF892B ($163.10) by over $60, with a slightly higher 4.7 vs. 4.6 rating. The DEWALT platform has a broader tool ecosystem.
Need help deciding if the CMCF921B is right for your project?
Email hello@toolgalaxy.com and the ToolGalaxy team will give you a straight answer based on your specific needs.