These Proline steps aren't rock sliders. They are steps mounted on a rail. It doesn't look like they offer any protection for the rocker panel, mostly due to the steps that hang down low. Most steps are counter productive to protecting the rocker panel.
Most good rock sliders, Domello, C4, BudBuilt, Shrockworks, RCI, White Knuckle, Sonoran Steel, etc. all serve double duty as a rock slider and a step. These all offer a narrow step but they work for a step up into the truck. My Domello rock sliders sit just below the floor level and serve as a good step.
