What brands of chainring bolts will fit these cranks?

synchronicity

Senior Retro Guru
I have a set of these 1st gen carbon record cranks:



I wasn't impressed with the ultratorque bearings on later campagnolo models, so I decided to keep the cranks... anyway, the 5mm hex openings on the chainring bolts are starting to round out, so I would like to replace the chainring bolts with some alloy torx bolts.

What are my options? What brands make these sort of chainring bolts for campy cranks with the special hidden arm?

Ideally I'd like something with laser-etched logos... oh and they have to be black!

Help!
 

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