New person posting here, so pardon my inexperience. That said, I am hoping someone can help with a specific dimension needed.

Purchased a Marchesini rear wheel from a 90's TZ250 for a project bike. I designed a sprocket carrier and had a few manufactured, due to no longer being available through Yamaha. As I only need a couple for my project bike, was wondering compatibility with a TZ. So, would anyone be willing to share the thickness of the carrier?

Any help you could provide would be greatly appreciated.Click image for larger version. 

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