LUCKY for the dollar I've been an electrician for 14 years I bought one 3 months ago and we went through a few steps even broke it by moving the seal have on it. I ended up buying 3 more. This is the best bang for your buck. I keep breaking boxes. Some don't, we have 6" knockouts, he can't handle more than 2.5", I can take 2" and under like a champ! We all love it. We use it dammit. And abused it, after all was said and done and we saw how easy it was to fix, when we broke it I had to get 3 more for my team. For the price of one Greenley, you get four of them. Forget the Unibit when it's light, compact and unlike the Greenley has the power you need for tight spaces. This is a must have for any electrician. Some banks will be difficult to breach