🚙[Factory Fitment] Only for Crew Cab(4 Full-Size Doors). Compatible with 2019-2024 Chevy Silverado/GMC Sierra 1500, 2020-2024 Chevy Silverado/GMC Sierra 2500HD 3500HD Crew Cab. NOTED: Exclude Chevy Silverado/GMC Sierra 2019 1500LD 🚙[Quick and Easy Setup] Complete installation in 20 minutes solo. 🚙[Heavy-duty Material] Constructed from heavy-duty Aluminum Alloy, making them both durable(400 lbs weight capacity) and never rust. 🚙[Wider Board] 6.3" wide board, combined with ABS plastic textured surface, providing a secure grip even in wet or slippery conditions. 🚙[Professional Customization] Designed specifically for Chevy Silverado/GMC Sierra, provide a secure and convenient step, making it easier to enter and exit your truck.