FreeBowden tube coupler clip
Thingiverse
6 model
Free
FreeBowden Coupler Fix
Thingiverse
FreeBowden / PTFE Tube Coupler - Two Sided
Thingiverse
FreeExtruder E3D type bowden coupler clip shim
Thingiverse
FreeFully Printed PTFE Bowden tube coupler for SPANNERHANDS spool holder.
Thingiverse
FreeEnder 3 (or any other probably) bowden coupler clip extruder fitting
Thingiverse