Fits:Chevrolet/GMC 2015-2017: Westin Platinum 4 Inch Oval Wheel-to-Wheel Step Bars offer truck owners a commercial grade quality step surface that spans the length of the vehicle and features a third step area to facilitate access to the truck bed. They feature a unique patent pending Isolator Bracket that supports the step bar past the truck cab on long bed applications, a feature that competitors do not offer.