Astro Pneumatic Tool 1822 ONYX 1/2" Nano Impact vs Robustrue Cordless Impact Wrench, 590Ft-lbs Brushless 1/
Updated August 2026 — Astro Pneumatic Tool 1822 ONYX 1/2" Nano Impact wins on weight, Robustrue Cordless Impact Wrench, 590Ft-lbs Brushless 1/ wins on battery life and versatility.
The Robustrue Cordless Impact Wrench offers more torque and versatility at a lower price, making it the better choice for most users.
Why Astro Pneumatic Tool 1822 ONYX 1/2" Nano Impact is better
Compact Design
Astro Pneumatic is shorter at 3-7/8 inches.
Weight
Astro Pneumatic weighs 3.0 lbs, lighter than Robustrue.
Air-Powered
Astro Pneumatic offers consistent power with air supply.
Why Robustrue Cordless Impact Wrench, 590Ft-lbs Brushless 1/ is better
Torque
Robustrue has a maximum torque of 590 ft-lbs.
Battery Life
Robustrue includes two 4.0 Ah batteries for extended use.
Versatility
Robustrue functions as an impact drill and screwdriver.
Overall score
Specifications
| Spec | Astro Pneumatic Tool 1822 ONYX 1/2" Nano Impact | Robustrue Cordless Impact Wrench, 590Ft-lbs Brushless 1/ |
|---|---|---|
| Power Source | Air | Cordless |
| Speed Settings | Not Specified | 3 Adjustable |
| Batteries | None | 2x 4.0 Ah |
| Sales Rank | 44761 | 8336 |
| Motor Type | Standard | Brushless |
Dimension comparison
Overview of the Astro Pneumatic Tool 1822 ONYX and Robustrue Cordless Impact Wrench
The Astro Pneumatic Tool 1822 ONYX is a compact and powerful impact wrench, while the Robustrue Cordless Impact Wrench offers versatility with its cordless design. The Astro Pneumatic is priced at $111.99, making it a premium option in this comparison, whereas the Robustrue costs $63.72, which is about 43% cheaper. This price difference highlights the Robustrue's appeal for budget-conscious consumers seeking effective performance.
Performance and Power
When it comes to performance, the Robustrue Cordless Impact Wrench boasts a maximum torque of 590 ft-lbs, significantly more than the Astro Pneumatic's 500 ft-lbs. This makes the Robustrue the more powerful choice for heavy-duty tasks. The Astro Pneumatic features a high-performance motor designed for efficiency, but with a slightly lower torque output, it may not handle the most challenging applications as effectively as the Robustrue.
Design and Ergonomics
Both impact wrenches have been designed with user comfort in mind, but they take different approaches. The Astro Pneumatic Tool 1822 ONYX has a very compact design, measuring less than 3-7/8 inches in length and weighing only 3.0 lbs. This short profile allows for better maneuverability in tight spaces. On the other hand, the Robustrue weighs 3.74 lbs and features a slightly larger size (5.9 inches front to back), making it still manageable but less compact. The ergonomic design of both tools caters to user comfort, although the Astro Pneumatic may be more suited for extended use in confined areas.
Battery and Power Source
The Astro Pneumatic Tool is an air-powered impact wrench, requiring a consistent air supply for operation. This can limit its portability compared to the Robustrue Cordless Impact Wrench, which comes with two 4.0 Ah batteries. The Robustrue's batteries enhance runtime by 50% compared to standard 2.0 Ah batteries, allowing for longer working periods between charges. Additionally, the one-hour quick charge feature of the Robustrue makes it convenient for users needing to maintain productivity without long downtimes.
Versatility of Use
The Robustrue stands out with its multifunctional capabilities, serving not just as an impact wrench but also functioning as an impact drill and screwdriver. This versatility makes it ideal for a range of tasks, from assembling furniture to automotive work. The Astro Pneumatic, while powerful, is specifically designed for impact wrench applications, which may limit its use in other scenarios compared to the Robustrue's broader functionalities.
Speed Settings and Control
Speed settings play a crucial role in the effectiveness of an impact wrench. The Robustrue Cordless Impact Wrench features three adjustable speed settings, ranging from 0 to 2800 RPM, allowing users to tailor the performance according to their specific needs. This adaptability can lead to improved efficiency and better results in various tasks. In contrast, the Astro Pneumatic does not specify variable speeds, which may limit its adaptability in different working conditions.
Sales Performance and Popularity
In terms of sales rank, the Robustrue Cordless Impact Wrench performs better, sitting at a bestseller rank of 8336 compared to the Astro Pneumatic's rank of 44761. This suggests that the Robustrue is more popular among consumers, likely due to its competitive pricing and versatility, which appeal to a wider audience seeking reliable impact tools.
Which should you buy?
Choosing between the Astro Pneumatic Tool 1822 ONYX and the Robustrue Cordless Impact Wrench ultimately depends on your specific needs. If you require a compact, air-powered impact wrench for precision tasks in tight spaces, the Astro Pneumatic may be the right choice despite its higher price at $111.99. However, if you're looking for a versatile, powerful cordless option with a significantly lower price of $63.72, the Robustrue is the better investment. It offers more torque, multifunctionality, and enhanced battery life, making it suitable for a broader range of applications.

