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Step bars, also known as running boards or nerf bars, are automotive accessories designed to enhance vehicle functionality and aesthetics. They typically consist of tubular steel or aluminum bars that attach to the side of a pickup truck, SUV, or van, providing a step for easy entry and exit. Step bars serve both practical and decorative purposes, offering increased safety and convenience while also adding a stylish touch to the vehicle's exterior. They are often included in automotive body kits and suspension kits, complementing other modifications and upgrades.