"Secure the king pin on your 5th-wheel trailer with the Camco RV King-Pin 5th-Wheel Stabilizer Jack. 3 independently adjustable foot pads make major height adjustments simple on any terrain. Turn the included stabilizer-adjusting lever for fine-tuning height at the screw level. Fits coaches with a king-pin height of 38-1/2""50"". Steel-tube construction with a chrome security chain. Certified 5,000-lb. capacity.Manufacturer model #: 48855. 3 independently adjustable foot pads Makes quick work of major height adjustments and fine-tuning Steel-tube construction with chrome security chain"