shim size

[nerfkhat]

HI guys i had a 4 angle valve job done to my head and need some pretty thin shims and found them at goodson supply but not sure what size we use and thought someone can answer real quick on here.

are they 27mm or 28mm or larger?

Thanks if you know!

 

[lintlars]

we use 25 mm shims

 

[nerfkhat]

Awesome thanks bro!