MaxMate Custom Fit 2001-2018 Silverado/Sierra 1500 & 2001-2019 2500/3500HD Crew Cab Stainless Steel 3" Side Step Rails Nerf Bars Running Boards(2pcs with Mounting Bracket Kit) IMPORTANT: Only fit Crew Cab with 4 full-size doors NOT for Extended Cab with 2 full-size front doors & 2 suicided rear doors.(Please check the Cab Size image above).; 100% brand new 2 bars for both driver & passenger sides. All mounting hardware and DIY instruction included.; Step bars are made of heavy duty stainless steel 3 inch round tubing ! UV resistant non-slip wide step pads.; Easy No-Drilling DIY installation in minutes.