Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact vs Milwaukee M18 FUEL 3/8" Compact Impact Wrench with
Updated August 2026 — Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact wins on power and torque, Milwaukee M18 FUEL 3/8" Compact Impact Wrench with wins on compactness and lighting.
The Milwaukee 2864-20 offers superior torque and durability, making it ideal for heavy-duty tasks, while the M18 FUEL excels in compactness and versatility for lighter applications.
Why Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact is better
Higher Torque
1200 ft-lbs vs 250 ft-lbs
Durability
Designed for heavy-duty applications
One-Key Tech
Allows performance tracking and customization
Why Milwaukee M18 FUEL 3/8" Compact Impact Wrench with is better
Compact Size
4.8 inches vs 8.59 inches
Price
$164.70 vs $319.99
Lightweight
Easier to handle in tight spaces
Overall score
Specifications
| Spec | Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact | Milwaukee M18 FUEL 3/8" Compact Impact Wrench with |
|---|---|---|
| Motor Type | Brushless | Brushless |
| LED Lights | No | Yes |
| Drive Control | No | 4 Modes |
| Nut-Busting Torque | 1500 ft-lbs | 250 ft-lbs |
| One-Key Feature | Yes | No |
Dimension comparison
Overview of the Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact
The Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact is a powerful tool designed for heavy-duty applications. With a price of $319.99, it ranks 15,815 in sales, making it a popular choice among professionals. This impact wrench features a brushless motor that delivers up to 1200 ft-lbs of fastening torque and an impressive 1500 ft-lbs of nut-busting torque, allowing it to tackle tough tasks with ease. Its compact design at 8.59 inches long enhances maneuverability, while the One-Key technology enables users to customize and track the tool’s performance.
Overview of the Milwaukee M18 FUEL 3/8" Compact Impact Wrench
The Milwaukee M18 FUEL 3/8" Compact Impact Wrench is a more compact option priced at $164.70. This wrench holds a sales rank of 13,255, indicating its popularity in the market. It boasts a compact length of just 4.8 inches, providing excellent access in tight spaces. Although it delivers 250 ft-lbs of nut-busting torque, which is significantly less than the 2864-20, it features a brushless motor and tri-LEDs for enhanced visibility while working. The four-mode drive control offers versatility, catering to various fastening needs with precision.
Performance Comparison
When it comes to performance, the Milwaukee 2864-20 stands out with its superior torque capabilities, providing 1200 ft-lbs of fastening torque compared to the Milwaukee M18 FUEL’s 250 ft-lbs. This difference makes the 2864-20 more suitable for heavy-duty tasks like automotive repairs and large construction projects. However, the M18 FUEL's compact size allows it to excel in tight spaces, making it ideal for plumbing or electrical applications. Despite its lower torque, the M18 FUEL's advanced features like auto shut-off and bolt removal control enhance its functionality for precision tasks.
Design and Build Quality
In terms of design and build quality, both products showcase Milwaukee's commitment to durability and user-friendly features. The Milwaukee 2864-20 is designed with a robust structure and weighs around 8 pounds, making it a solid choice for demanding environments. The M18 FUEL, while lighter and more compact, is built to withstand rigorous use, ensuring it remains reliable during extended work sessions. The tri-LED lighting on the M18 FUEL enhances visibility, reducing shadows and improving work efficiency, especially in dimly lit areas.
Battery and Charging Options
Both impact wrenches are sold as bare tools, meaning they do not include batteries or chargers. However, the Milwaukee M18 FUEL is compatible with the M18 REDLITHIUM battery packs, which are designed to deliver more work per charge. This compatibility ensures that users can maximize their efficiency without the need for constant battery replacements. In contrast, the Milwaukee 2864-20, while also utilizing the M18 battery system, emphasizes its One-Key technology, allowing users to manage the tool’s performance and location more effectively.
Price Comparison
The Milwaukee 2864-20 is priced at $319.99, making it significantly more expensive than the M18 FUEL, which costs $164.70. This price difference of about 48% reflects the higher torque and advanced features offered by the 2864-20, which are aimed at professionals requiring robust performance. The M18 FUEL, being about 17% cheaper, appeals to users looking for a budget-friendly option without compromising on essential features for light to moderate tasks.
User Experience and Feedback
User feedback highlights the Milwaukee 2864-20's exceptional torque and reliability for heavy-duty applications, making it a favorite among contractors and professionals. Its sales rank of 15,815 indicates a solid reputation among users who prioritize power. On the other hand, the Milwaukee M18 FUEL’s compact design and versatility attract users who frequently work in tight spaces, as reflected in its sales rank of 13,255. Users appreciate the precision control and visibility provided by this model, indicating a strong performance in its category.
Which should you buy?
Choosing between the Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact and the Milwaukee M18 FUEL 3/8" Compact Impact Wrench ultimately depends on your specific needs. If you require a powerful tool for heavy-duty tasks, the Milwaukee 2864-20 is the clear winner with its unmatched torque capabilities and durability. However, if you prioritize compactness and versatility for lighter tasks, the Milwaukee M18 FUEL offers excellent features and a more affordable price point. Consider your typical projects and workspace limitations to make the best choice for your toolkit.