The original AMP RESEARCH POWERSTEP seamlessly extends when any door is opened, giving a rock solid, safe and convenient step up into your truck. When the doors clode, it retractes just as smoothly, streamlining the vehicle with no loss of ground clearance. High strength diecast aluminum alloy linkages arms, alnodized and teflon coated to resist corrosion. Extruded textured steps are rated at 600lb per step. OEM style custum wiring and electric controller employ pressure-senitive, pinch-proof technology. Intergated LED light system is standard on all AMP Powersteps. Available for most late model GM, Ford, Dodge, Jeep, Toyota, Hummer and Nissian applications.