MAXIMUM TRACTION. Grip Step truck steps have unique expanded metal treads that provide an exceptional level of traction and safety in spite of the weather conditions. They offer a safe, comfortable 7-inch wide stepping surface LIGHTWEIGHT. These truck running boards are built from aluminum, making them strong but lightweight. This helps keep your truck unencumbered by excessive weight and promotes better fuel efficiency CLEANER CAB. The unique tread pattern of these truck side steps also helps keep your truck cab cleaner. Dirt and debris are knocked off your boots as you climb up, and the mess is allowed to pass through the open treads TOUGH FINISH. To maximize corrosion resistance, these aluminum step rails have a highly durable black powder coat finish. This ensures professional-grade protection against rain, snow, dirt and other threats SOLID INSTALLATION. These Grip Step truck step bars fit select model years of the Chevy Silverado 1500, 2500, 2500 HD, 3500 or 3500 HD and GMC Sierra 1500, 2500, 2500 HD, 3500 or 3500 HD (NOTE: Components ship separately)