This is one side (the side that connects to the x-axis motor) of a cable chain system for the Chiron's wires. Instead of having them flop around and get in the way on the side this keeps them in a channel out of harms way.
I started out trying to use someone else's mounts but I didn't like how they attached and my mod would bind up at the top of the Z-axis. So I modified the mount from Thingiverse (www.thingiverse.com/thing:3457946) and I plan to change the mount at the other side as well.
Included is a version without screw holes just in case your cable chain has a different screw hole pattern.