Tyger Auto 3inch Stainless Steel Side Step Nerf Bars 2pcs Fit 1999-2017 Silverado/Sierra Extended & Double Cab LD/HD 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 polished 3inch round heavy duty marine-grade T304 stainless steel tubing with UV resistant non-slip wide step pads. Easy bolt-on installation. No Drilling. Limited Lifetime Warranty!