MUST READ FITMENT NOTE: ONLY FITS DOUBLE/CREW CAB = 4 FULL SIZE DOORS. INSTALLS TO THE ROCKER PANEL. || Description: Full length 5 inch wide tread style slip-resistant step pads give easy access to the cab of the truck with a rugged modern appearance and matching end caps that protect the ends of your boards Constructed from strong, lightweight, corrosion resistant aircraft grade aluminum with a black textured finish. Heavy duty brackets provide a 400 pound weight rating per side Custom slide track system gives you the flexibility to adjust the position of your boards to your liking while still providing you a no-drill rocker panel install Quality guaranteed with a limited lifetime manufacturer warranty on the workmanship/structure and a 10 year limited manu .