2020 Elddis Crusader Mistral - wheel nut size?

[PTA]

I am struggling to find the wheel nut size for the above caravan (with alloy. wheels as standard). My torque wrench set doesn't include one that fits.
Any responses much appreciated.

 

[Jcloughie]

It will be 17, 19, 21, or 23mm most very likely 19. unless you have a security fitting.


John