I guess I have to tell you they are metal....
they are replacement bodyshop fenders, I realize that nobody has made these before but the bodyshop guys swear to me that they are available and they have used them.
Certifit makes them, but they can never get them, they never have any but they supposedly make them.
Keep in mind that Certifit makes really shitty parts, as do most collision parts manufacturers. That's why I stress mine are factory, they fit like factory. Not SORTA-fit.