Robustrue RT1400B 1/2 in Brushless Cordless Impact Wrench
- Item Torque: 1180.1 ft-lb
- Head Style: Square Drive
- Operation Mode: Battery
- Material Type: Metal
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B0CSFWMT52Model: RT1400BCategory: Impact Drivers & Wrenches
Overview
The Robustrue RT1400B is a cordless impact tool running on 21 volts and weighing 5 pounds. The weight and voltage point toward an impact wrench rather than a lighter impact driver, though the listing does not state torque output, drive size, or battery capacity.
Robustrue is a newer entrant in the budget cordless tool space, and the RT1400B's 21 volt rating sits at the upper end of what these compact tool lines typically advertise. At 5 pounds, it is built more like a wrench for lug nuts and larger fasteners than a driver for screws, though without a torque figure or drive size in the data, exact capability cannot be confirmed.
- Model RT1400B
- 21 volt cordless power source
- 5 pound tool weight
Who it's for
Suits buyers wanting a cordless impact tool for automotive or heavier fastening work, based on its weight class. Not the right fit for someone needing precision screw driving or a confirmed torque spec, since neither is stated here.
Pros and cons
- 5 pound build suggests wrench class torque capacity
- No torque figure, drive size, or battery details listed
- 21 volt marketing figures on budget tools often overstate sustained output
Performance notes
Higher weight in a cordless impact tool typically comes from a larger motor and gear housing built for sustained torque, which fits wrench class use rather than light driving. The 21 volt rating common to this style of budget tool line often reflects peak battery voltage rather than sustained working voltage, so real world torque can vary from what the number implies.
Specifications
| Brand | Robustrue |
|---|---|
| Model | RT1400B |
| Dimensions & fit | |
| Item Weight | 5 poundshigher than 73% of 184 impact drivers & wrenches |
| Item Length | 0.5 incheslower than 98% of 128 impact drivers & wrenches |
| Power & efficiency | |
| Voltage | 21 voltshigher than 83% of 171 impact drivers & wrenches |
| Construction & materials | |
| Material Type | Metal |
| Color | Green2 |
| Finish Types | Polished |
| Included components | |
| Unit Count | 1 |
| Included Components | 1* Carrying Case, 1* User Manual, 1* Impact Wrench,, 1*5 Inch Extension Bar, 2*4.0Ah Batteries, Charger, 5*socket Sizes (17mm, 19mm, 21mm, 22mm/24mm) |
| Package Quantity | 1 |
| Other details | |
| Item Torque | 1180.1 ft-lbhigher than 87% of 116 impact drivers & wrenches |
| Head Style | Square Drive |
| Operation Mode | Battery |
| Item Type Name | Impact Wrench |
| Eu Spare Part Availability Duration | 3 years |
Closest rivals on specs
Zekkip 1/2 in Brushless Cordless Impact Wrench- Item Torque 1180.1 vs 958.8 ft-lb (+23%)
Frequently asked questions
Is the Robustrue RT1400B an impact wrench or impact driver?
The listing labels it Impact and gives a 21 volt, 5 pound spec, which reads closer to a wrench class tool than a light driver, though this is not explicitly confirmed.
What voltage does the Robustrue RT1400B run on?
21 volts, per the listing attribute data.