N-FAB C1598CC-SS Polished Stainless Steel Nerf Steps; Wheel 2 Wheel Chevy-GMC 2500 / 3500 (15-16 Diesel Model) Crew Cab 6.5' Standard Bed 15-18 Trend-setting hoop step design provides ease of access for all passengers 304 marine grade Stainless Steel in high polish finish Fully welded assembly with integrated mounting brackets, for maximum strength and ease of installation 3" main tube diameter Rated to support up to an industry leading 465 lb.