Bowden lock nut with M10 thread

This is a bowden clamp replacing standard pneumatic connector with M10 thread (like used by flsun delta printers on heatsink).
Unlike other designs, it doesn't rely on flexibility of the material, so it works very well even when printed with brittle materials like PLA.
Thanks to locking wedges pressing squarely on the bowden tube (unlike version with conical thread, where bowden tube is more or less pinched in one place), the hold is very secure and it's totally sufficient to hand-tighten the top nut without any tools.