What size gromet for rear wiper?

[chriscummins7]

Hey, just a quick question... going to de-wiper the old girl and was just wondering if anybody knew off the top of their heads what size gromet i will need to plug the hole? Cheeeeeers

 

[chriscummins7]

P.S Its a mk2 ph2

double post fail!

 

[James28]

I used a 13mm one from Halfords. It fills the hole perfect, but doesn't cover the whole of the flat circle bit:

 

[chriscummins7]

thank you mate, perfect