The DT Swiss Ratchet LN Freehub Kit takes your pawl hub with an Shimano HG11 body and converts it into a Ratchet LN system. This system is incredibly reliable thanks to simultaneous engagements of the ratchets over a wide contact area to evenly distribute a load. The modular nature of the hub makes it easier to adjust the angle of engagement and freehub body. For a step by step tutorial on how to convert your system, see the video below.