Hello, this is a custom design for the cr10 v3 that allows to use bearings to guide the filament into the sensor without much/any friction.
I used some flanged bearings I had around.
When printing the pins, I suggest you scale it to 98-99% in the slicer to make it fit.
To remove the pins, you actually have to use a wood screw, screw it half and pull, or just make your own cilinders with a better design!
You'll have to use longer screws than original ones to mount it to the metal frame.
https://youtu.be/jNjfuIqy_W8

No

.2mm