The file 'REMIX – Creality HotEnd Fix 3D Printer Model' is (stl) file type, size is 43.8KB.
A remix of Creality HotEnd Fix.
In my case, the PTFE-tube needed to be 31 mm long, but I don't know if things might vary from hotend to hotend.
In my opinion, this works a lot better than the original design.