If you are looking for a Strong, cheap and reliable impact wrench, a The Black Tools Impact Wrench Model TB-21I could be just what you need. I've tested every detail of this tool to bring you a complete and to the point review, showing whether it really delivers the power and practicality it promises.
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What comes in the TB-21I kit? (Complete and ready to use)
The Black Tools TB-21I Impact Wrench comes in a sturdy, well-organized hard case. Inside you'll find:
- Carrying case
- 1 21V battery (4.0Ah)
- Bivolt charger
- 4 impact sockets (17, 19, 21 and 22 mm)
- Steel pin + rubber locking ring
- Carrying handle
- Manual and 6-month warranty
It's a kit that you can use straight away, even to change wheels, assemble machines or use in your home workshop.
Construction and ergonomics of the TB-21I
The build quality of the TB-21I is surprising for its price. It comes with:
- Reinforced aluminum front
- Rubberized handle
- Balanced weight
- Good ergonomics (fits even large hands)
It feels firm and secure in the hand. For those who work in sweat or wear gloves, the rubber on the handle helps a lot with grip.
Dashboard, speed and functions
The TB-21I has features that usually only appear on more expensive tools:
- Progressive speed control
- Front LED for working in dark places
- Battery charge indicator
- Reverse function (loosening/tightening
Two power modes for tightening:
1900 RPM (Low Power)- 2400 RPM (Power High)
This makes it much easier to control the torque and avoid over-tightening.
Brushless motor: a big plus for the TB-21I
The Black Tools TB-21I Impact Wrench comes equipped with brushless motor, which offers:
- Greater durability
- Less heat
- More efficiency
- Better battery usage
For a key in this price range, that's quite a difference.
Power: 430 Nm of real torque
The TB-21I delivers 430 Nm torque, making it possible:
- Loosening car wheels
- Loosening truck wheels
- Assembling and disassembling engines
- Loosening stuck screws
- Working on metal structures
But beware: because it is so strong, you should avoid holding the trigger down for too long on sensitive squeezes. This can:
- Tapping threads
- Kneading plates
- Damaging nuts
A quick touch is usually enough.
Real-life tests - TB-21I in everyday life
1. test in a passenger car (Kombi)
Results: it came off extremely easily!
The function that loosens and stops automatically prevents nuts from falling off - very useful in practice.
2. Truck test
Even with extremely tight and rusty screws, the TB-21I managed to come loose.
It took a few seconds longer, but loosened without the need for a bar, force or wheel spanner.
For anyone who has suffered trying to loosen a wheel that has been over-tightened by a bodyshop, this is a huge relief.
Charging and autonomy
Loading is simple:
- 1 hour → 50%
- 2 hours → 100%
As it only comes with one battery, those who use it a lot may want to buy another - but at the moment, according to the brand itself, it's out of stock on the free market.
For home or emergency use in the car, a battery will do just fine.
Is The Black Tools TB-21I Impact Wrench worth buying?
Yes, it's very worthwhile, as long as you don't use it professionally (like a tire repairer all day).
Positive points
Excellent value for money
Brushless motor
430 Nm of torque
Complete kit with sockets
Good ergonomics
Useful settings
Ideal for cars, motorcycles and home workshops
Negative points
❌ Only one battery in the kit
Not suitable for continuous heavy use
For whom:
- You want a strong, inexpensive tool
- You want to leave it in the car for emergencies
- Do your own maintenance
- Use in domestic workshop
- Frequent wheel spin
... the TB-21I is excellent choice for the price.
