Hello All

I'm hoping some kind soul, either someone who knows or someone with a Camaro 7220t and a set of callipers can help. My 7220t has a service crown and service hands. Looking to get the crown replaced first, with a correct one, and first stop is to work out the size. I believe it should be 6.7 x 3mm, but could someone confirm please?

Thanks in advance!

And because photos always help...