One of the common mistakes people make when choosing the size of wrench for automotive work is failing to consider the size of the vehicle they'll be working on..
The size of the vehicle you'll be working on will determine the amount of torque required.
So, then taking quick look at the measurements of the tool you're looking at will give you and idea of its dimensions so you're not surprised once you get your hands on it. 4.
3 4-inch or even 1-inch impact wrench will provide torque levels..
2 impact wrench may be the option for you..
Due to the fact that it's hooked to the power outlet, corded impact wrench has more space to store more motor that delivers excellent torque..
Furthermore, 2 impact wrench will be bulky and expensive than, say, 4 impact wrench, causing major headache..
Otherwise, to change tires of bigger vehicles like trucks, then I'd say 4 impact wrench is better as it provides more torque to easy remove lug nuts without stripping them of damaging the tool itself..
That being said, that in order to get advice on how much torque your impact wrench requires, you should first research the torque levels required for the automotive part you'll be working on..
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