The LEAD STAND scissor jack is a fast and labor-saving design. The package size of Jack is 39.4 *8.7*11 centimeter and the maximum height is 42 centimeter. The load of this scissor jack is 1.8 tons(3968lbs). The threaded shaft of the jack is solid and the steel plate is thickened. The maximum height of the jack is 42 centimeter, and the steel column at the top can be disassembled,which is suitable for cars and sports utility vehicles. The jack is designed to be labor-saving. It is easy to lift the car when operating. Usage Method: 1. First park the car on a flat hard road and turn off the engine. 2. Second fix the other three tires with tire pads or bricks. 3. Third turn the screw shaft of the jack by hand to control the jack to rise until the top of the jack is against the underbody. 4. Fourth when the car operates the jack, there is no need to install the steel column of the jack. 5. Fifth put on the jack ratchet wrench and shake it back and forth to control the jack to rise, and stop the operation after the tire is off the ground. 6. Sixth switch the ratchet wrench button and operate the control jack back and forth to lower. reminder: When using a jack, be sure to pay attention to the method and method used When using a jack, it should be supported in the correct position and observed for any signs of tilting in any direction as it gradually rises. If so, it is because the center of gravity changes during the cars ascent, causing the car to gradually move. Therefore, it should be lowered and tire pads or bricks should be placed under the tires in the corresponding direction to prevent slight movement when the car rises. Remember, dear. Failure to follow the instructions may affect normal use and even damage the jack Anyway, if the car moves in any direction, it needs to be stuck in front of it in order to support it from moving The design of the jack is only to withstand the vertical pressure from above and below If the car moves slightly, it will bring a significant lateral force to the jack