wiper rubber refill thick ?

[Nacho-RT74]

Hi buddies. I finally got  OEM TRICO wiper blades ( used ). they look painted argent or something... is that the original finish ? or must they be shine polished ?

Well that's not the main question even I would lve to get the answer. The main question is the rubber refill itself. Replacement ones are imposible to find here ( it looks hard up there too ) and I will need to buy the complete aftermarket assembly UGLY BLACK ONES, and remove the rubber refill to install on the Trico blades. However there are lots of brands and thicks. I would like how is the original refill to get the closest one to originals and isntall on the ones I got.

please PICS will be REALLY helpfull to check closer the metallick reinforcement location and stuff