Tyger Auto Premium Custom Fit 2007-2017 Chevy Silverado/GMC Sierra Ext/Double Cab 5" Wide 76" Long Stainless & Alloy Running Boards Side Step Rails Nerf Bars IMPORTANT: Only fit 07-13 Ext Cab with 2 full-size front doors & 2 suicided rear doors and 14-15 Double Cab with 2 full-size front doors & 2 narrower rear doors. NOT fit Crew Cab with 4 full-size 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 extruded aluminum with sturdy structure in black E-Coating for corrosion resistance. Aircraft grad stainless steel trim covers for lifetime shine. UV resistant non-slip 5inch wide step pads. Easy No-Drilling DIY installation in minutes. Lifetime warranty