Ender 3 Max / Ender 3 Neo extruder PTFE all-metal bowden coupler collets

Ender 3 Neo has an all-metal extruder coupling (not threaded). This is a replacement collet. Remixed for tighter grip. The inside ‘teeth’ are more pronounced, and seem to keep the PTFE tube even in the absence of metal blades inside. 

Print in super detail, at least 0.08mm layers.

Best printed in PLA (PETG might be too soft).