Compatibility: OEDRO drop running boards will perfectly compatible with 2019-2025 Chevy Silverado/ GMC Sierra 1500 Double Cab; 2020-2025 Silverado/ Sierra 2500HD 3500HD. if you’re not sure what model you have, please check the cab size picture Functional Protection: ① 6inch side steps feature two-stair layout to provide better convenience for vehicles with lift kits and oversized wheel tires. Also allows for easier rooftop operation.② Three-tube design provides more protection for the bottom and the side of the car, also preventing from getting stuck on the rocker plate or hanging obstacles Strong and Durable - 6 brackets have been proven to handle up to 550 lbs. without bending. Unique powder coating offers exceptional rust and corrosion resistance so you can drive under any condition. The laser cutting step plate achieves a non-slipping step surface and reinforced grip Bolt-on Installation: Welded brackets provide additional strength.Package contains 2 nerf bars, set of brackets & hardware; Installation can be completed within 20 minutes with no cutting or drilling Note: The bracket is not pre-welded on the step bars! Buy with confidence! Please confirm the cab picture in the listing before ordering. Should any inquiries arise, feel free to contact us directly. For your safety, professional installation recommended