Silverado Sierra Extended/New Double Cab 6" Chrome Oval Assist Style Running Boards Step Bars 2007-2014 DOES NOT FIT DIESEL Lifetime Warranty One piece blow molded ABS & Aluminum frame construction, NO rusting! Driver/Passanger pair with brackets. No drilling required. Instructions & all mounting hardware is included Factory style UV resistant, no fading or cracking. Designed to last a Lifetime Rubber molded step grooves for xtreme secure footing Aluminum rail molded in bottom of tube for superior strength.