MZG Cordless Impact Wrench, 21V 406 Ft-lbs MAX Torque vs ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/
Updated August 2026 — MZG Cordless Impact Wrench, 21V 406 Ft-lbs MAX Torque wins on accessories, ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/ wins on torque and battery life.
The MZG Cordless Impact Wrench offers great value and performance for standard tasks, while the ReliaRoads excels in high torque applications.
Why MZG Cordless Impact Wrench, 21V 406 Ft-lbs MAX Torque is better
Price
MZG is $38.99, significantly cheaper than ReliaRoads at $69.97.
Included Batteries
MZG comes with two 2.0Ah batteries included.
Weight
MZG is lighter, making it easier to handle for extended periods.
Why ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/ is better
Torque
ReliaRoads provides 900 ft-lbs of torque, superior for heavy-duty tasks.
Battery Compatibility
ReliaRoads is compatible with DeWalt 20V MAX batteries.
Sales Rank
ReliaRoads has a better sales rank at 15,813 compared to MZG's 52,682.
Overall score
Specifications
| Spec | MZG Cordless Impact Wrench, 21V 406 Ft-lbs MAX Torque | ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/ |
|---|---|---|
| Max Torque | 406 ft-lbs | 900 ft-lbs |
| Battery Type | 2.0Ah included | DeWalt 20V compatible |
| Speed Settings | 3 speeds | 3 speeds |
| LED Light | Yes | Yes |
| Motor Type | Brushless | Brushless |
Dimension comparison
Overview of the Cordless Impact Wrenches
The Cordless Impact Wrench by MZG and the ReliaRoads 900 Ft-lbs Cordless Impact Wrench are both excellent choices for those in need of powerful tools for automotive repairs and construction projects. The MZG model is priced at $38.99, making it about 44% cheaper than the ReliaRoads model, which retails for $69.97. Both wrenches offer impressive torque, but they cater to slightly different needs and preferences.
Torque and Power Comparison
When it comes to torque, the ReliaRoads model stands out with an impressive 900 ft-lbs of power, making it suitable for demanding tasks like machinery maintenance and industrial repairs. In contrast, the MZG cordless impact wrench delivers a maximum torque of 550 N·m (approximately 406 ft-lbs). This difference in power makes the ReliaRoads a better choice for users who frequently need to tackle stubborn bolts and heavy-duty applications, whereas the MZG model performs admirably for standard automotive tasks and DIY projects.
Battery Compatibility
Battery compatibility is a crucial factor for many users. The ReliaRoads cordless impact wrench is designed to be compatible with DeWalt 20V MAX battery systems, which is a significant advantage for those who already own DeWalt tools. On the other hand, the MZG model comes with two 2.0Ah batteries included in the package, ensuring that users are ready to work right out of the box. If you already have DeWalt batteries, the ReliaRoads may be the more convenient option; however, for newcomers, MZG offers better initial value.
Speed Control Features
The MZG wrench features three variable speed settings (0–1500, 2100, and 2600 RPM), allowing users to select the appropriate speed for different tasks. This level of control is beneficial for both tightening screws and removing bolts efficiently. In contrast, the ReliaRoads model also offers three speed modes but specifies torque levels of 450, 650, and 900 ft-lbs, catering to tasks that require sustained power. For users who prioritize precision control over a range of tasks, both models offer unique advantages, but MZG's RPM settings may be easier to interpret for casual users.
Design and Usability
In terms of design, both models feature user-friendly elements. The MZG cordless impact wrench includes a built-in LED work light that illuminates dim workspaces, enhancing visibility during use. Additionally, its smooth trigger control allows for precise speed adjustments based on user pressure. The ReliaRoads model also boasts an LED light and an ergonomic anti-slip grip, which reduces fatigue during extended use. Both designs prioritize user comfort, but the MZG's responsive trigger may appeal more to those who need finer speed control.
Price Consideration
Price is a significant differentiator between the two models. The MZG cordless impact wrench is priced at $38.99, while the ReliaRoads model costs $69.97, making the latter approximately 79% more expensive. For budget-conscious consumers or those who do not require the highest torque options, the MZG offers an economical solution without sacrificing essential features. However, the additional investment in the ReliaRoads may justify itself for those who frequently engage in heavy-duty tasks that require top-tier performance.
Sales Performance
Looking at sales performance, the ReliaRoads model has a better sales rank at 15,813, compared to the MZG’s rank of 52,682. This indicates that the ReliaRoads is a more popular choice among consumers, likely due to its higher torque capabilities and brand recognition associated with DeWalt compatibility. However, the lower sales rank of the MZG does not necessarily reflect its quality; it might simply cater to a different segment of users who are more focused on budget options.
Which should you buy?
Choosing between the MZG Cordless Impact Wrench and the ReliaRoads 900 Ft-lbs Cordless Impact Wrench depends on your specific needs. If you require high torque for heavy-duty tasks and already own DeWalt batteries, the ReliaRoads is the superior option despite its higher price. However, if your projects are generally less demanding and you appreciate a cost-effective solution, the MZG model provides excellent value, especially with its included batteries and good torque performance. Ultimately, both tools have their merits, and the best choice will vary based on user requirements and budget.

