This is replacement part for the main cable holder on the print head if you bought vibration/g-sensor and want to hold the cable to the sensor with the main one. It fits over the main cable and has added slot for the vibration cable - you just slide the cable under it and there you go.
I have printed in PETG for higher temperature stability (in comparison with PLA) and used 100% infill for added rigidity (at least that's what I think).
The author marked this model as their own original creation.