Material comparison of mudguards

Hey!

I’m about to buy some new parts for my buddy’s truck and would need some advice on material regarding the mudguards. I’ve done some research on the internet, but I have only gotten confused… Hence how new to trucking I am… Could you guys help me out?
I’m staring a poll here, and any other advice on buying mudguards is highly appreciated. :slight_smile:

Thanks a bunch!

What are you asking?