LUVERNE side entry step box extensions are the perfect complement for our stainless steel side entry steps. Like the side steps, these truck bed steps feature a strong, non-corrosive construction and a safe, functional design for work trucks and classic custom builds alike. They also offer a custom fit for each application with no drilling necessary. LUVERNE box extensions are unique from side entry steps. While the side steps mount onto the cab portion of the pickup truck, the box extensions mount onto the sides of the truck bed. They are intended to provide safe, easy access to the truck bed, whether for cargo, a 5th wheel hitch, a ladder rack or a truck tool box. These truck bed side steps are made with tough polyethylene step pads and hard black plastic end caps for a bold accent. The step pads feature a textured, non-skid surface, offering dependable traction and comfortable footing, even in wet or muddy conditions. All LUVERNE side entry step box extensions are constructed from non-corrosive stainless steel and feature a highly polished finish. This ensures durable strength and a long-lasting accent fitting for your truck. LUVERNE truck box steps are also designed vehicle-specific, providing a custom fit and integrated look without the headache of tedious modifications. This set of custom truck bed steps fits certain years of the Chevy Silverado 1500, 2500 HD or 3500 HD and GMC Sierra 1500, 2500 HD or 3500 HD (see application info to verify fitment). They come with powder-coated steel brackets for maximum rigidity and all necessary hardware to complete the installation (cab-length running boards not included).