E-Series 3 Round Nerf Step BarsWestin(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. Injection Molded Polymer Step Pad Recessed Step Area Bolt On Installation; No Drilling Required Mount Kit Included 3 in. Round Step Bars