RV jack is mainly used for balance support of tourism trailer RV and tractor. Effectively solved the difficulties that the RV bulky to tract, is your RV travel indispensable good helper. 1.Flexible handle, easy to move and easy to use. 2.High Use high-grade hardware, durable. 3. quality steel, strong bearing capacity. 4. Surface spray treatment, effective rust prevention, can prolong the service life.