Portable 6,000-lb, 48″ mid-rise lift: Portable trolley supports the pump and maneuvers the lift from one service bay to another. Twin hydraulic cylinders and scissors lift design provide maximum support and stability. Hydraulic velocity fuses allow slow release of lift in the event of hose or hydraulic component damage. 4-3/4” low height for easy drive on and off. Fast and efficient operating pump powered by a 1 hp, 115 volt motor. Sliding radius arms easily adjust to vehicle frame lift positions. Automatic mechanical safety lock will lock in a 26-1/2”, 34-1/2”, 41” or 48” lift height.