Luverne O-Mega II 6" x 78" Black Aluminum Step Nerf Bars Model 584078-571743LUVERNE O Mega II 78 Inch Black Aluminum Side Steps, Select Chevrolet Silverado, GMC Sierra 2500, 3500 HD Model 584078 571743 Like many LUVERNE side steps and running boards, O Mega II 6" oval side steps are made to work hard and to do it with style. They are constructed from strong, lightweight, rust free aluminum, and to truly make them a step up from the rest, we shield them in a highly durable powder coat finish. This ensures maximum corrosion