4mm bowden tube end holder

I have the filament spool rolling on top of my delta printer and my extruder is mounted a lot lower to one of the towers. Therefore I need to use a secondary bowden to guide the filament from the spool to the extruder. I designed this thing to hold the end of the secondary bowden tube at the vertical top profile where this is mounted.

This is designed to be used such that the bowden tube is pushed all through the hole. The hole is not a straight through hole, it has 0.2mm of curvature to augm