[skidlids]

5/8" = 15mm ish
1/2" = 12.5mm ish

So sizes as they go up are

1/2"
13mm
14mm
5/8"
16mm
18mm
3/4"

I'll see if I can dig some out tomorrow, but the main priority tomorrow is to cure the carb leak on my Class B monster, probably only a sticking float.
Also tomorrow I have to decide if I should connect up its second caliper or remove it along with the second disc