Package Include:Nilight Leveling kit 2pcs（6061 Aluminum alloy）,Screw × 6, nut × 6, gasket × 6,After-sales card×1，Installation instruction×1 Material:The leveling lift kit is made of 6061 aluminum alloy,CNC automatic processing for better durability and lighter weight. The surface treatment is anodized black, which is not easy to rust and lasts longer Compatible with:2007-2023 Silverado 1500 2WD/4WD, 2007-2023 Sierra 1500 2WD/4WD Easy Install:Installation can be completed within 1-2 hours, No cutting and drilling required.Stable and safe driving under any circumstances Notice:Please measure the size you need and do not purchase the wrong size