Rock Rail Nerf BarRetractable rockguard step, Side Bar application designed for dual use as both an entry step and rocker panel side protection. Use as a side step for street use or release step lock to fold up to the rocker guard position for side protection and added off-road clearance. High pressure gas shocks pull and hold the bar in the upright, rocker guard position ? Step pressure on the bar returns and locks the bar into the step bar position. Textured, black powder coated finish is durable and compliments factory components. Durable steel construction - 2in tube x .120in wall.