The running boards are anodized and coated to resist corrosion. They come with high strength, die-cast aluminum alloy linkage arms. The steps are aircraft-quality aluminum with a textured powder coat finish for grip and durability. They’re rated up to 600 pounds load capacity tire inflater.
Please read the originial post here: https://specialopstools.com/blogs/super-duty-truck-build/2016-ford-super-duty-f350-electric-running-boards-installation