Fitment: The running boards fit for Chevy Silverado GMC Sierra 1500 2026 2025 2024 2023 2022 2021 2020 2019, and fit for 2020-2025 2026 Silverado GMC Sierra 2500HD 3500HD. ONLY FOR CREW CAB MODEL (4- Full Doors) Mutifunction Design: Running boards for silverado 1500 with off-road style are serrated and abrasive, providing a textured layer for increased grip. The sludge on the sole of the shoe can also be scraped by the serrated, to keep your car clean Full-width Protection: Fitting for silverado 1500 side steps are made of strong carbon steel to reduce the damage caused by impacts and scratches of the vehicle. Up to 500lbs loading capacity for each side of rock rail steps and 5.9inch width fully for daily needs Durability: The running board for silverado 1500 has a simple design, which is more durable than the original style and single running boards style. The side steps made of heavy duty carbon steel, and the surface of rock rail steps with black powder coating for rust resistant Product List: Including 1 Pair of Side Steps fit for silverado 1500, 8 Brackets and Others Installation Hardware. No drilling Installation Instruction Paper and Installation Guide are also provided Please note that the running boards NOT fit for 2019 Chevy Silverado GMC Sierra 2500HD 3500HD The running boards fit for Chevy Silverado GMC Sierra 1500 2026 2025 2024 2023 2022 2021 2020 2019, and for 2020-2025 2026 Silverado GMC Sierra 2500HD 3500HD. ONLY FOR CREW CAB MODEL (4- Full Doors)