They feature 30 factory style bends that have seamless domed ends so there are no end-caps or exposed bolt heads. Constructed of 4, 5 or 6 oval tubing with 4 wide injection molded polymer step pads Westin 21-21335 1999-2016 Ford F250/F350/F450 Super Duty PRO TRAXX 4 O... oval tube with a heavy-duty step pad that provides a wider and more secure step area. Protects vehicle rocker panels from potential damage PRO TRAXX 5 Oval Nerf Bars Black | #21-53255 | Westin Automotive Western Truck Accessories APS Running Boards (Nerf Bars Side Steps Step Bars) Compatible With Ford F250 F350 Super Duty 1999-2016 Regular Cab (Stainless Steel Black Powder Nerf Bars For Trucks Bolt-on installation and mount kit included - no drilling required on most applications Sulky Blendables Thread 30wt 500yd CountryColonial | Michaels Applications are bolt-on installation.
