Vacum hoses. What size?

[Chrispraider]

Hi I want to replace all the vacum hoses in my 5. What diameter are these? and how much should I buy to redo the lot?

Cheers

[Chrispraider]

:)Anyone? I think I have a leak somewhere so i`m just gonna replace the lot and it should all look nice then

[Bigfoot]

Two different sizes in the engine bay, 4mm and 6mm

[Chrispraider]

Thanks mr big foot :)