This is a splitter designed exclusively for Xol toolhead with OrbiterV2 mount that turns one fan header into two. It makes it much simpler for wiring up Xol toolheads that have two-part cooling fans.
You just need to print this and it will snugly fit into the hole on the side of the Xol toolhead. Remember to remove the screw under it before installation as the screw will go in later and act as a holder to keep the splitter in place.
About how to do the wiring and install, check the original model: https://www.printables.com/model/694723-ebb36-jst-splitter-for-dual-part-cooling-fans
The author remixed this model.
Remix to exclusively fit in the hole in OrbiterV2 mount