TLDR Review: CRAFTSMAN V20 Impact Wrench CMCF900B
Verdict
The CRAFTSMAN V20 Cordless Impact Wrench (CMCF900B) offers portability and significant power for certain heavy-duty applications, making it handy for home garage use and on-the-go repairs. However, users expecting it to match the performance of air tools in all scenarios may find it lacking, specifically regarding the real-world torque output. For those seeking superior performance, especially in demanding automotive settings, you might want to explore alternatives like higher-end models from Milwaukee which have shown better results in similar tasks.
- Top pro:
- Offers convenience by eliminating the need for air hoses, unlike pneumatic wrenches.
- Top con:
- Struggles to loosen high-torque bolts, failing on some applications like Jeep JK lug nuts.
Pros
- •Offers convenience by eliminating the need for air hoses, unlike pneumatic wrenches.
- •Delivers exceptional power for removing stubborn bolts and nuts, outperforming some air impact wrenches.
- •Easily removes rusty bolts from assemblies, such as the AMC 242 flywheel.
- •Suitable for high-torque tasks like driving lag screws and changing tires.
- •Viewed as a good investment overall with reliable performance for heavy-duty applications.
- •Portability makes it ideal for road calls and on-site repairs.
- •Comes with a robust warranty of three years, extendable to five years.
- •Considered a valuable addition to any mechanic's toolbox for its power and versatility.
Cons
- •Struggles to loosen high-torque bolts, failing on some applications like Jeep JK lug nuts.
- •Weighs over 6 pounds, making it less portable and more challenging to fit into tight spaces.
- •Actual torque output may be significantly lower than the claimed 350 ft-lbs, with some users experiencing only around 80 ft-lbs.
- •Lacks adjustable torque settings, limiting precise control during use.
- •May produce a melting plastic smell when used heavily.
- •Not effective as a replacement for air tools in demanding automotive repair tasks.
- •Disappointment noted among users for not performing as marketed, especially for automotive usage.
We may earn a commission when you buy through these links, at no extra cost to you. How ShopSavvy makes money
How we researched this
About this review: it summarizes the professional reviews and customer ratings ShopSavvy collected for this product, alongside prices from 2 retailers in ShopSavvy's price data, most recently seen Sep 5, 2026.
Where to Buy
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
| $139.00 | Apr 26, 2025 may have changed | ||
| $189.00 | Sep 5, 2026 may have changed |
Download ShopSavvy App
Compare prices across tens of thousands of stores, set price alerts, watch for deals by keyword, and much more.
Install ShopSavvy Browser Extension
Compare and track prices automatically while you shop online at thousands of websites.
