I have this Crimpstecker used to old, cut network connector to help back to life again. At first it was a bit difficult, but if you have firstonce understood how it works and with a normal crimping tool, no problem. Super I find the Kabeleinfuehrhilft without this I would never have come this far! But important that Kabeleinfuehrhilfe by pushing until the end! After going all out by yourself. Have fun with the Internet or network.