I had lost my first set many years ago, which had a total of 11 blades. It was costly at the time, but it was very useful and of durable quality. In fact, I don't recall seeing any imitations of this tool at the time, like there are so many of right now. I knew this Nonaka Japanese screwpunch was the same as the original as soon as I took it out of the package. It had the same red & clear vinyl case with the little pocket for the blade that comes with it when you don't purchase the set. The only thing that was new this time around was the wonderful clear punching pad. I wasted no time trying out each of the 10 screwpunch blades and was very happy with the results. Clear cut-out holes were made with minimum effort, just as before with my old set. Very grateful for my purchase😊