How to chase helicoiled threads?

Have you ever used these?, they are WAY better than helicoil repairs, you drill then tap to the specific size to the threaded insert ( that info is supplied with the insert ), then simply turn them in and then strike down the four small pins with a punch, not only did you fix it but it will NEVER come back out, I have a marine repair shop we use these all the time I stopped using helicoils years ago.