Westin 1980-1997 Ford F-Series Reg Cab (97 HD models only) E-Series 3 Nerf Step Bars - BlackWestin(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. Bolt on installation no drilling required on most applications Protects vehicle rocker panels from potential damage Bolt On Installation; No