FEATURES: 1 The whole set of Car Repair Tool Kit for Electric Car Jack and Electric Impact Wrench 2 Adopt self-developed small flow and large effeciency gear pump,reduce electrical power,reduce the work of car batteries and circuits, to ensure the car circuit is not affected. 3 Design of current overload protection. 4 Design self-locking power structure and safety unloading knob, in case of the power has been disconnected,the increased jack will not fall.Then when re-connecting the power, jack will go on working in accordance with the instruction, or using the safety unloading knob to fall, which will protect the user's personal safety effectively 5 Fully enclosed design of the hydraulic tank, the machine used at any angles will not leak oil. 6 The machine just connects the auto cigarette lighter, then the auto will be risen and fallen. 7 Portable, compact and easy to operate. 8 Air hose, power cable and tools collected in the tool box neatly when not in use.