Bestop 75634-15 PowerBoard NX Retractable Running Board Set for 2008-2016 Ford F-250/F-350/F-450 Super Duty Crew Cab Electrically powered running board hides stealthily underneath your truck when doors are closed and extends down to meet your foot when door opens No door wires are tapped and the interior of truck cab is not touched or altered as wireless components are placed in the door jambs which send wireless signal to central receiver that open or close the steps as needed Variable-mount LED light kit attaches to linkage or to body and illuminates board and ground below for easier access in and out of your vehicle more tools Patented high strength, die-cast aluminum linkages built to last in any climate with 600 pounds capacity per side Sturdy 6.25 inch wide aluminum running board features ultra-durable, non-slip, powder-coated surface