I have a 1000NM (~740 ft-lb) Bosch with a 1/2" drive. So, far it's defeated everything I used it on. I also have a Bosch 1/4" hex drive impact wrench and two Bosch Freaks with a 1/4" hex / 1/2" square drive combo chuck. It's been a long time since I've had to get the air powered rattle gun out...