This kit included all of the connectors for the UR’s I/O interface. The robot already comes with a set of connector, so why would you every need another set? Let’s say you are taking full advantage of your collaborative robot and are moving it around your shop to different stations. If each station has some I/O, it would be a real pain to wire up the robot at every station. If you conectorize your I/O at each station, it would be a simple plug and play process. So, if you move your robot around a lot and don’t want to hassle with physically rewiring your I/O every time, get this kit and you can have plug and play I/O at each station.