I originally purchased this several months ago, just to try one out and see if it was any good. Well I just purchased two more.So a little back ground. I am the owner of an electrical company that primarily does commercial electrical installs. We are always working with metal studs. Anytime your running conduit through metal studs you will usually need to knock a hole here or there. These stud punches work great, the guys that work for me gave this a five star so I purchased two more. Compared to others that are a lot more expensive these are just as good and way cheaper. The case is a plus, it’s protected in the gang box from being beat up.GB