I bought this article in confidence since many very positive reviews .... Some even claim to have dismantled the damper pulley (crankshaft pulley) with this machine. I do not know how they managed to achieve this feat since the maximum torque before disengagement seems low. I tested on this type of pulley and the clutch is done even before the pulley rotates (for info, with a single wrench, I turn easily by hand). Device just good to disassemble and reassemble the wheels and again, once this impact wrench disengages, I can tighten my bolts with a cross !! Thus saving time and that's it! I did not expect that at all very disappointed. I do not put 1 but 2 stars because as indicated in the instructions, the unit is expected to nuts or wheel bolts and that, it does somehow !!!