Milwaukee Right Angle Impact Wrench - Milwaukee - 2564-20 vs Seesii Impact Wrench 665 FT-LBS 3300IPM 1/2 Impact
Updated August 2026 — Milwaukee Right Angle Impact Wrench - Milwaukee - 2564-20 wins on design and ease of use, Seesii Impact Wrench 665 FT-LBS 3300IPM 1/2 Impact wins on weight and torque.
The Seesii Impact Wrench offers superior power and value, making it the better choice for heavy-duty tasks.
Why Milwaukee Right Angle Impact Wrench - Milwaukee - 2564-20 is better
Compact Design
Ideal for tight spaces
Lightweight
Weighs only 2.83 lbs
Durable Material
Constructed from hardened steel
Why Seesii Impact Wrench 665 FT-LBS 3300IPM 1/2 Impact is better
Higher Torque
665 ft-lbs loosening torque
Dual Battery
Includes two 21V batteries
Rapid Charging
Charges to 80% in 30 minutes
Overall score
Specifications
| Spec | Milwaukee Right Angle Impact Wrench - Milwaukee - 2564-20 | Seesii Impact Wrench 665 FT-LBS 3300IPM 1/2 Impact |
|---|---|---|
| Current Price | $176.98 | $129.99 |
| Torque Rating | 220 ft-lbs | 665 ft-lbs |
| Battery Type | M12 Lithium-Ion | 21V Lithium-Ion |
| Weight | 2.83 lbs | 9.3 lbs |
| Sales Rank | 32386 | 8037 |
Dimension comparison
Overview of the Right Angle Impact Wrench and Seesii Impact Wrench
When comparing the Right Angle Impact Wrench from Milwaukee and the Seesii Impact Wrench, there are distinct differences that cater to various user needs. The Milwaukee wrench is priced at $176.98, while the Seesii offers a more budget-friendly option at $129.99, making it about 17% cheaper. Each tool has its unique features that make them suitable for different applications, so it is essential to evaluate their specifications and capabilities.
Design and Build Quality
The design and build quality of these impact wrenches highlight their intended use cases. The Milwaukee wrench boasts a compact right-angle design, making it ideal for tight spaces, and weighs only 2.83 lbs, which enhances maneuverability. On the other hand, the Seesii Impact Wrench features a more robust build with a 1/2 inch ultra-thick square head and weighs 9.3 lbs. While the Seesii is heavier, it is designed for high-intensity tasks, showcasing its durability through military-grade dual ABS housing that can survive drops from 1.2 meters.
Power and Performance
Power and performance are critical factors for any impact wrench. The Milwaukee Right Angle Impact Wrench delivers an impressive 220 ft-lbs of torque, which is suitable for heavy-duty tasks. In contrast, the Seesii Impact Wrench outperforms with a loosening torque of 665 ft-lbs (900N.m) and tightening torque of 579 ft-lbs (800N.m), making it significantly more powerful for demanding applications. With 3300 impacts per minute (IPM) and a rapid installation time of truck wheel bolts in just three seconds, the Seesii is designed for efficiency.
Battery Life and Efficiency
Battery life and efficiency are vital for prolonged usage. The Milwaukee wrench operates on the M12 FUEL Lithium-Ion battery, providing reliable cordless power. However, the Seesii Impact Wrench is equipped with two 21V/4.0Ah high-capacity lithium batteries, effectively doubling runtime for all-day operation. The Seesii also features a rapid charging capability, reaching up to 80% in just 30 minutes, which significantly enhances its operational efficiency compared to Milwaukee’s single battery system.
Ease of Use
In terms of ease of use, both impact wrenches offer user-friendly features. The Milwaukee Right Angle Impact Wrench's compact size allows for easy maneuvering in tight spots, making it ideal for automotive and other constrained applications. Conversely, the Seesii Impact Wrench is designed with an ergonomic shape and a balanced center of gravity, allowing for comfortable handling during extended use. The anti-slip nylon hanging rope also adds to its convenience, making it easy to store or hang during work.
Durability and Safety Features
Durability is crucial for tools intended for heavy-duty work. The Milwaukee wrench is constructed from hardened steel, ensuring long-lasting performance. However, the Seesii wrench takes durability a step further with its tungsten steel anvil and alloy steel hammer, designed to withstand significant impact resistance for years of use. Additionally, the Seesii includes smart safety protection features that prevent over-current, over-voltage, overheating, and short circuits, providing an extra layer of safety for users.
Pricing and Value
When considering pricing and value, the Seesii Impact Wrench stands out as the more economical option at $129.99. In comparison, the Milwaukee Right Angle Impact Wrench is priced at $176.98. For users looking for a powerful tool without breaking the bank, the Seesii provides significant value, especially with its higher torque ratings and included dual battery system. The Milwaukee, while more expensive, may appeal to those who prioritize a compact design for specific applications.
Which should you buy?
Ultimately, the choice between the Right Angle Impact Wrench by Milwaukee and the Seesii Impact Wrench depends on your specific needs. If you require a compact tool for tight spaces with reliable performance, the Milwaukee option is an excellent choice. However, if you need a more powerful wrench for heavy-duty tasks, with extended battery life and robust durability, the Seesii is the better option, particularly at its lower price point. Selecting the right impact wrench hinges on balancing your budget with the required power and application.

