The Powerjack System is a Rugged, Dependable, Hydraulic Trailer jack system. Powerjack Systems provides an easy method of attaching and detaching the trailer, loaded or empty. Double R Industries Inc has brought you a jack tough enough to work in the extreme conditions found in the Oil Field, the Construction and Utility Industries, and the Farm.  The Powerjack System is a hydraulic lift for your trailer. A six position lock stand holds your trailer in place when not in use, loaded or empty. The Powerjack System will work with most hydraulic sources. Our system components make it function properly.