Robust fenders. Seems to work as advertised. Pricey and probably overpriced, but what else is there? Ordered and delivered same day, next day on my car. I think it's worth it. Easy to install, 20 minutes max. Spray a penetrator like PB Blaster or wd40 around the contact area of the old fenders and then remove them. I didn't have a large number of channel blocks. So I unscrewed them with a flathead screwdriver and a hammer, no problem, no damage, unscrewed by hand. The top nut is welded to the frame, so do not try to remove it. Simply hand-tighten the timbre and you're done. Keep the old fenders because you can remove the timbres and sell them for at least half what you paid if you decide to sell your truck.