The nerf bars span the full length of your rig, for wheel-to-wheel protection of the rocker panel, as well as an entry step. They are constructed of strong 3 in. steel tubing and finished with a durable black powdercoat. Plus they are pre-slotted with holes for adding the complementary Knight Guard steps. The steps are U-shaped tubes designed with a flat area step pad of aluminum diamond plate. They are available in two different drop heights, and are easy to install and remove.