Brake pipe union size?

[Congorobot]

I need to replace my rear brake pipes before MOT. Ive ordered new flexi-pipes for the rear and will make up the solid pipes myself. Does anyone know the size of the unions? M10 by any chance?

 

[aragorn]

M10x1 on most Vags.

 

[Congorobot]

Thanks. Will try that size first!