Copy of the classic tool of a well-known company. I am a professional electrician and I have used it twice so far in my work and it has been very helpful. I wonder why I haven't been using this or a similar tool for so many years. I don't know how long it will last, but from what I've seen, it takes interchangeable blades (unknown where to find them). It fits well in the hand and has the blade in front (I don't know how useful it is, if there was a version without it, maybe I would prefer it). Overall, the tool seems perfect so far.