Provides maximum leveling and stability for motorhomes by permanently installing the jacks front and rear. Total system capacity is 20,000 lbs. (5,000 lbs./jack leg). Fills the gap between inexpensive stack jacks and high cost electro-mechanical or electro-hydraulic systems. Easy to install with the unibracket universal mounting bracket design. Easy and quick to operate - the manually activated drive screw required minimum time and effort to level and stabilize the RV.