BendPak RBJ18000 / 18,000lb Capacity Rolling Bridge JackThe powerful 18,000 lb. capacity RBJ18000 rolling bridge jack is made for use with your HD 35 4 Post series lift. Sometimes a vehicles center of gravity isnt in the exact middle of the vehicle. Even a 30,000 lb. vehicle might require a jack that is rated for more than half the vehicles weight. While the 18,000 lb. capacity RBJ18000 will handle the weight of many heavy duty vehicles, some larger trucks, buses and commercial drivers have significantly