PST Adjustable UCA spacers

I recently bought a set of PST Adjustable UCA's for an E-body without the spacers. One would think these could be purchased separately, but it seems that's not the case. PST was less than helpful.

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So, I am wondering if anyone who has these UCA's might be able to quickly dimension them for me so I can make some. Even better would be the off chance someone has some laying around they won't use.