MaxMate Premium Custom Fit 1999-2017 Chevy Silverado/GMC Sierra Extended/Double Cab Black 3" Side Step Rails Nerf Bars Running Boards(2pcs with Mounting Bracket Kit) IMPORTANT: Not for 3-Door Extended/Double Cab or 4-Door Crew Cab; 100% brand new 2 bars for both driver & passenger sides. All mounting hardware and DIY instruction included.; Step bars are made of heavy duty Black Powder-Coated 3 inch round tubing rust resistant! UV resistant non-slip wide step pads.; Easy No-Drilling DIY installation in minutes.; 5-Year warranty