Made to fit the AMP PowerSteps.Constructed from 6063 marine grade aluminum.Drops original PowerStep by 2 inches.Ideal for lifted trucks.Safely holds up to 600 lbs of evenly distributed weight.Designed, Engineered and Manufactured in the USA!AMP Research PowerStep Extension Arm Kit includes four two-inch hinge extensions for your PowerStep swing arms that add another two inches of total drop to your AMP PowerSteps. The extensions come standard with a black finish. Includes all hardware necessary for installation. Product comes with easy to understand vehicle specific installation instructions. Be sure to read and precisely follow the provided instructions when installing. This product comes with a Limited Lifetime structural and 5-year finish manufacturer warranty. California Residents: Prop 65 Warning