Westin(TM) E-Series Nerf Bars are made of 3in. diameter round tubing and are vehicle specific designs. Step design and mounting technique varies by application (mounting kit included). They feature recessed area mounted step pads unique to E-Series Nerf Bars feature the Westin(TM) brand name and are UV resistant. E-Series 3 in. Round Step Bar Cab Length; Dual Step Pad; Polished Stainless Steel; Mount Kit Included; Ram 1500 Crew Cab 2009-2018; 1500 Classic Crew Cab 2019; 2500/3500 Crew Cab 2010-2019 (Excl Cab Chassis w/Def Tank)