Bought one to pull out some dents om my 39 GMC and the Stud welder completely stopped working after trying to weld only 4 studs. It would arc before I pushed the button. I took it back last week and got a rain check because they are on sell for $99. The store did not get any in on their truck on Tuesday and online is on back order. I drove 45 min to the next closest store because they only had two left. That was Wed 12/14/2011. I returned it last night 12/16/2011. The studs just kept pulling off after one pull with the slide hammer. Slide hammer is the biggest piece of junk like everyone says. If you really want to buy one keep your receipt so you can return it.