回複：thks,try any air wrench for auto uses?

Yes, any wrench, no problem. I used it for 1/2" and 3/4" impact wrenches (Ingersoll Rand). Little bit to low for the 3/4" impact, enough for 1/2" one. Trick is to use the wrench impulsively, burst couple of seconds, once the bolt loosen, it is ok to make a long shot.