I have one. It works ok within it's limits (like all tools). It has enough torque to screw things up faster than I can fix them. The major problem in my opinion is the size and weight. It is impossible to get at most bolts with it unless you have a lot of space and, the weight will wear you down quickly. I use it on my old jeeps where there is a lot of room to manuver, but I have never used it on the imports-no room. I think it is an ok tool (I bought mine rebuilt) but I would not buy another one because of it's size. However, it was a good purchase when I had no air in the shop and it did work well on rusted bolts on jeeps.