DEWALT DCF899B 20v Brushless High Torque Impact Wrench with Detent Anvil Review


Being deeply immersed in the world of do-it-yourself projects and having a profound passion for automotive pursuits, my understanding of the significance of possessing the correct tools has evolved significantly. Among the myriad tools that have recently piqued my interest, the DEWALT DCF899B 20v Brushless High Torque Impact Wrench with Detent Anvil stands out. This review aims to delve into my personal encounters with this robust tool, offering insights into its performance, distinguishing features, and a comprehensive assessment of its standing in diverse categories.

Brief Specifications

  • Brand: DEWALT
  • Model: DCF899B
  • Finish Type: Powder Coated
  • Head Style: Hex, C Shaped
  • Item Torque: 700 Foot Pounds

My Personal Experience for this Tool

Having recently acquired the DEWALT DCF899B 20v Brushless High Torque Impact Wrench, I can confidently attest to its remarkable performance and overall value in various applications. The first thing that struck me was the sheer power of this tool. Tackling automotive tasks, such as loosening tight lug nuts, became a breeze with its impressive 700 ft-lbs torque for fastening and a robust 1,200 ft-lbs for breakaway torque.

Person using a yellow DeWalt drill on a machine.

The brushless motor technology truly shines here, not only maximizing efficiency but also ensuring a longer tool life, making it a reliable companion for both professional and DIY projects. Moreover, the detent pin anvil proved to be a game-changer in terms of convenience. The secure socket connection it provides eliminates any worries about unexpected disconnections during operation, streamlining workflow in fast-paced scenarios.

Person using a DeWalt drill on a rusty pipe.

While the wrench’s weight of 6.4 pounds may be a consideration for extended use, the trade-off is well worth it for the durability and power it delivers. From dismantling stubborn components in automotive repairs to effortlessly handling heavy-duty construction tasks, my personal experience with the DEWALT DCF899B has been nothing short of impressive. It has quickly become a staple in my toolkit, showcasing the reliability and performance that DEWALT is renowned for.

Power Performance

Delving into the power performance of the DEWALT DCF899B unveils a remarkable engineering feat. At its core lies a potent 20-volt brushless motor, a technological marvel that propels this impact wrench into a league of its own. With a torque output of 700 ft-lbs for fastening and a formidable 1,200 ft-lbs for breakaway torque, the DCF899B stands as a formidable force in the realm of power tools.

Hand holding a DeWalt power drill on a black background.

In practical scenarios, this means the tool effortlessly handles a diverse array of applications, ranging from the finesse required to loosen stubborn lug nuts on automotive projects to the sheer brawn needed for heavy-duty construction endeavors. The nuanced balance between precision and strength positions the DCF899B as a versatile solution for both intricate tasks and robust undertakings.

Person using a yellow and black power drill on a metal pole.

Moreover, the brushless motor not only contributes to the wrench’s power but also elevates its overall efficiency and longevity. This key feature ensures a sustained and reliable performance that outshines many counterparts in the market. Whether it’s the intricacies of fine-tuning components or the brute strength required for challenging tasks, the DEWALT DCF899B’s power performance sets an industry standard, earning the trust of professionals and enthusiasts alike.

Setting It Up

Setting up the DEWALT DCF899B 20v Brushless High Torque Impact Wrench with Detent Anvil is a straightforward process that ensures you’re ready to tackle a variety of tasks with precision and power. Begin by inserting a fully charged 20-volt DEWALT battery into the designated slot on the tool.

Person holding a DeWalt power drill.

Ensure that the battery clicks securely into place. The next step involves selecting the appropriate socket size for your specific application. With the detent pin anvil, you can confidently attach the socket, ensuring a secure connection for seamless operation. The ergonomic design of the impact wrench, featuring a comfortable grip and strategically placed controls, enhances user convenience during setup.

Before powering up the tool, familiarize yourself with the variable speed control settings. This feature allows you to tailor the tool’s performance to the task at hand. Once you’ve made these adjustments, you’re ready to experience the impressive torque capabilities of the DCF899B. Whether you’re tackling automotive repairs, construction projects, or any heavy-duty application, this impact wrench is designed to make your work more efficient and effective.

DeWalt drill and various drill bits on a black tray.

Additionally, for extended use, consider having spare batteries on hand to minimize downtime, ensuring a continuous workflow. The straightforward setup process combined with the robust design makes the DEWALT DCF899B a reliable and user-friendly addition to your toolkit.

Review of Visual Concepts

Visual Concepts has outdone themselves with the DEWALT DCF899B 20v Brushless High Torque Impact Wrench with Detent Anvil, presenting a tool that not only performs exceptionally but also boasts an aesthetically pleasing design. The sleek and robust construction of the impact wrench immediately conveys a sense of durability and reliability. The carefully placed controls, along with the distinctive DEWALT branding, contribute to an overall polished and professional appearance.

The strategic integration of visual elements enhances user experience, allowing for intuitive operation. From the ergonomic grip to the clear markings on the tool, Visual Concepts demonstrates a keen understanding of the importance of visual design in crafting a powerful and user-friendly tool. The combination of form and function in the DEWALT DCF899B reflects Visual Concepts’ commitment to delivering a product that not only excels in performance but also appeals to users with its thoughtful and visually pleasing design.

Comparative Alternatives

In comparing the DCF899B to other impact wrenches on the market, its power and efficiency stand out. While some models may boast similar torque figures, the brushless motor technology of the DEWALT ensures longer tool life and increased battery efficiency. This is a critical factor for those of us who rely on our tools for extended periods.

Comparison Table and Competitive

FeatureDEWALT DCF899BGrizzly PRO T30292X2
Motor TypeBrushlessBrushed
Torque Output (ft-lbs)700 (Fastening), 1,200 (Breakaway)450
Anvil TypeDetent PinHog Ring
Weight6.4 lbs4.2 lbs (with battery)
Variable Speed ControlYesYes
Battery IncludedNoYes (2 batteries included in the kit)
Charging TimeVaries based on battery and chargerApproximately 1 hour per battery
Build QualityDurable, built for demanding environmentsSturdy construction with a comfortable grip
Price RangeHigherMid-range
Competitive Analysis

The DEWALT DCF899B and the Grizzly PRO T30292X2 cater to different segments of users based on their features and performance. The DEWALT model boasts a higher torque output and utilizes advanced brushless motor technology, making it suitable for professional applications and demanding tasks. The detent pin anvil ensures a secure socket connection, enhancing its performance in various scenarios.

DeWalt power drill with two 20V batteries.

On the other hand, the Grizzly PRO T30292X2 is positioned as a budget-friendly option, making it more appealing to DIYers and those with light to medium-duty tasks. The inclusion of a variable speed trigger and an LED work light adds convenience for users tackling tasks in various conditions.

Grizzly PRO T30292X2

Ultimately, the choice between the two impact wrenches depends on the user’s specific needs and budget constraints. The DEWALT DCF899B shines in terms of power and durability, while the Grizzly PRO T30292X2 offers a cost-effective solution with additional features for those with less intensive tasks.

Pros and Cons


  • Impressive Torque: The standout feature of the DEWALT DCF899B is its remarkable torque capabilities. With a powerful punch of 700 foot-pounds, this impact wrench proves to be a versatile and reliable tool, excelling in various applications. From automotive repairs to heavy-duty construction tasks, its robust torque ensures efficient and effective performance.
  • Brushless Motor Technology: The integration of brushless motor technology sets the DCF899B apart from its competitors. This advanced technology not only enhances the tool’s overall efficiency but also extends its lifespan. The brushless motor reduces friction, minimizes wear and tear, and maximizes battery efficiency, making the impact wrench a long-term investment for users who demand durability and consistent performance.
  • Detent Pin Anvil: The inclusion of a detent pin anvil is a thoughtful design element that adds a layer of convenience to the user experience. This feature ensures a secure socket connection, preventing unexpected disconnections during operation. This is particularly advantageous in fast-paced work environments where uninterrupted workflow is crucial.
  • Durable Build: Crafted to withstand the rigors of demanding work environments, the DCF899B boasts a durable build. This durability not only enhances the tool’s longevity but also instills confidence in users tackling tough tasks. The robust construction ensures that the impact wrench remains a reliable companion, even in challenging and harsh conditions.


  • Weight: Weighing in at 6.4 pounds, the DCF899B is slightly heavier compared to some of its competitors. While the weight contributes to the tool’s solid and sturdy feel, it may pose a challenge during prolonged use. Users engaged in extended tasks might experience some fatigue, especially in scenarios where maneuverability and portability are critical factors.
  • Price: While the performance of the DEWALT DCF899B justifies its cost, it’s essential to acknowledge that this impact wrench falls on the higher end of the price spectrum. This might be a consideration for budget-conscious users who are weighing the cost against their specific needs. However, for those who prioritize performance, durability, and advanced features, the investment in the DCF899B is likely to pay off over time.

Decision-Making Factors

When considering an impact wrench, factors such as torque, durability, and ease of use are paramount. The DEWALT DCF899B excels in these areas, making it an ideal choice for professionals and serious DIYers alike. The brushless motor ensures longevity, and the detent pin anvil adds a layer of convenience that sets it apart.


After extensive use and careful consideration, I confidently recommend the DEWALT DCF899B 20v Brushless High Torque Impact Wrench with Detent Anvil as the go-to choice for those who demand top-tier performance and reliability. While the weight might be a concern for some, the trade-off is well worth it for the power and durability this tool brings to the table.

Final Verdict

In the realm of impact wrenches, the DEWALT DCF899B stands as a formidable contender, showcasing a combination of power, efficiency, and durability that caters to both professionals and dedicated DIY enthusiasts. The impressive torque output of 700 foot-pounds, coupled with the benefits of brushless motor technology, ensures that this tool not only meets but exceeds performance expectations. The thoughtful addition of a detent pin anvil adds a practical touch to its design, enhancing user experience in fast-paced work settings. While the tool’s slightly heavier weight may pose a consideration for prolonged use, the robust and durable build instills confidence in its reliability under demanding conditions.

Although it sits at a higher price point, the DEWALT DCF899B proves to be a worthwhile investment for those prioritizing top-tier performance, longevity, and advanced features in their arsenal of tools. Overall, it earns a well-deserved spot as a go-to impact wrench for those who demand uncompromising quality in their work.

Frequently Asked Questions

  1. What is the power source for the DEWALT DCF899B?
    The DEWALT DCF899B is powered by a 20-volt battery, providing a reliable and portable source of energy for its operations.
  2. Is the torque output adjustable on this impact wrench?
    Yes, the DEWALT DCF899B features variable speed settings, allowing users to adjust the torque output based on the specific requirements of their tasks.
  3. How does the brushless motor technology benefit the performance of this impact wrench?
    The brushless motor technology in the DCF899B enhances efficiency, extends the tool’s lifespan, and maximizes battery efficiency by reducing friction and minimizing wear.
  4. Can the DEWALT DCF899B handle automotive tasks, such as loosening lug nuts?
    Absolutely. With a torque output of 700 foot-pounds, the DCF899B is well-suited for automotive applications, making tasks like loosening stubborn lug nuts more manageable.
  5. Does the impact wrench come with multiple head styles for different applications?
    Yes, the DEWALT DCF899B comes with a Hex, C-Shaped head style, providing versatility for various fastening and loosening applications.
  6. How does the detent pin anvil contribute to the tool’s functionality?
    The detent pin anvil ensures a secure socket connection, preventing unexpected disconnections during operation, and adds a layer of convenience to the user experience.
  7. What is the weight of the DEWALT DCF899B, and does it impact usability?
    The impact wrench weighs 6.4 pounds. While it contributes to the tool’s solid feel, it may cause some fatigue during prolonged use, particularly for tasks requiring extended maneuverability.
  8. Is the DEWALT DCF899B suitable for heavy-duty construction projects?
    Yes, the DCF899B’s high torque output of 700 foot-pounds for fastening and 1,200 foot-pounds for breakaway torque makes it well-suited for heavy-duty construction tasks.
  9. How durable is the build of the DEWALT DCF899B?
    The impact wrench is built to withstand demanding work environments, featuring a durable construction that ensures longevity and reliability under challenging conditions.
  10. What is the warranty coverage for the DEWALT DCF899B?
    DEWALT typically offers a limited warranty on their tools. It’s recommended to check the warranty information provided by the manufacturer for specific details on coverage and duration.

Your feedback matters! Feel free to drop your own experiences and opinions on the DEWALT DCF899B 20v Brushless High Torque Impact Wrench with Detent Anvil in the comments section. Your unique insights can be invaluable for others looking to make well-informed decisions when choosing their next impact wrench. Let’s build a community of shared knowledge and expertise!

Edward Smith
Edward Smith
Forestry Author

Woodworking is about more than crafting; it's a harmonious connection with nature, mastering tools, and preserving our environment. I'm here to share my knowledge and experiences with you, forging a future where we can embrace wood's beauty and utility while safeguarding our forests' health and diversity.


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