Inner Carbon blade as an "upgrade"?

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Apr 2023
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haha yeah, sorry read that on megaspin(dont know if its reliable for info but thats where i buy most of my stuff).
The confusion might be probably because there are two F3s. The old one had kiri core and different type of carbon, I don't remember which one exactly. It was replaced years ago with the new F3 which is ayous and Alrylate carbon, if memory serves me right, and it plays differently.
 
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