OEMTools Heavy Duty 1/2" Drive Li-Ion Impact Wrench

I rebuild transmissions. Two of my co-workers bought OEM battery impacts. While they were the 3/8 version both have failed, one of which started smoking on the first day of use.

For real man I bought a snap on one about 15 years ago and that had 550. Granted there alot more expensive but to do real work like rusted lug nuts your gonna need north of 500 torque.