1999-2012 Ford Super Duty F-250/F-350/F-450 BedStep Mounts to the frame at the corner of the rear bumper Engineered to support up to 300 lbs Maintenance-FREE, Self Lubricating Bushings Corrosion-Resistant, Anodized and coated finish Durable, Non-Slip, Glass-Reinforced Composite Step Pad