This thing is heavy. That being said I removed the piston nut off on a boom cylinder on a 320 Cat excavator. At 150 psi the impact gun may have had about 5 or 6 beats when the nut broke loose. These are torqued to 2500-2600 ft-lbs. I am very impressed with the gun. I have an Ingersoll-Rand with the same features, but it is not half as strong as the vevor. I can't speak to the durability or longevity of the impact, but it seems to be made well. Again, this thing is heavy. A man can handle it, but I wouldn't want to handle it for hours on end.