Tyger Auto 3inch Black Side Step Nerf Bars 2pcs Fit 2001-2017 Silverado/Sierra Crew Cab LD/HD IMPORTANT: Only fit Crew Cab with 4 full-size doors. (Please check the Cab Size picture.) 100% brand new 2 bars for both driver & passenger sides. All mounting hardware and DIY instruction included. Step bars are made of 3inch round heavy duty Black Powder-Coated Rust-Resistant mild steel tubing with UV resistant non-slip wide step pads. Easy bolt-on installation. No Drilling. TYGER 5-Year warranty!