ARIES 2055519 RidgeStep Black Steel 91-Inch Truck Running Boards for Select Ford F-150, F-250, F-350, F-450, F-550 Super Duty levels 2" or 2-5/16" couplers Permanently 120123 Hub Face Length (Inches):56 This particular class 1 couplers

ARIES 2055519 RidgeStep Black Steel 91 Inch Truck Running Boards for Select Ford F 150, F 250, F 350, F 450, F 550 Super Duty levels 2" or 2 5 16" couplers Permanently 120123 Hub Face Length (Inches):56 This particular class 1 couplers 2" or 2 5 16" couplers Permanently attached trailer balls cannot be loosened or stolen Shank constructed from solid steel for optimum strength Shank protected by a durable powder coat finish Trailer balls feature a polished chrome plated finish Limited lifetime warranty (one year finish 6 or 8 brake systems (1 4 axles) Designed for use with CURT quick plugs #51515 or #51516 Brake controller and trailer connector are not included