Off Roader 5 inch Eboard Running Boards Aluminum 07-16 Chevy/GMC Silverado/Sierra Ext.Cab/Double Cab Side Step Rails Tube Nerf Bars Custom fit, heavy duty aluminum running boards for your Chevy/GMC Silverado/Sierra Double Cab - simple, clean, flat profile design Lightweight yet durable T-6 aircraft grade aluminum body + ridged rubber top with non-slip tread along entire running board 5" wide corrosion resistant, heavy duty running boards (set of 2) - supports 300 lbs on either passenger or driver side Easy to install - all hardware, brackets and instructions included with running boards Brand new, patented, and designed in the USA - eBoard running board is America's best selling running boards