A grommet for the Sovol SH01 that allows a for a standard 4 mm outer diameter PTFE tube to pass through.

With the standard hole size in the Sovol SH01 and subtracting the 4 mm for the PTFE tube there is not much room left for the grommet and screw thread. So the part it is pretty thin. They can break when you apply a too great force or after time. But you can always print some new ones.

Works better for me than some of the alternatives out there.

Print instructions

Use Arachne wall generator and print at a 0.1 mm layer height for a good definition of the screw thread. Also print slow enough that you have good layer adhesion (small parts so the layer print time is very low)

I suggest PETG over PLA.