The part was designed by me because the Replicator 2x often has problems with cable breakage at the transition from daual extruders to the wiring harness.
This upgrade enables the cable harness to be fixed over a longer distance with 3 cable ties.
If the mount is printed with only a small amount of infill (15%), there is still a very slight flexibility.
With the extension of the cable holder I had so far no problem with cable breaks or wear of the cable insulation.
Have fun! ;-)
The less the holder should move, the higher the infill must be.
I have had good experiences with 15%.