size for x3. seed response bads?

I was curious but I can’t find here nor at there x3 website as far as I can see it could be 19 mm but St such a large size maybe not ? It comes with Size c bearing so I wondered if that had any indication. ?

Anyone ?

Ummm, have patience little one. It’s only been a little over an hour. :wink:

I’ve only got so much time !