The structure of the scissor jack is very simple, with few components, and the overall components used to lift heavy objects only have a base, two side brackets, and a saddle at the top. Once it is in competition with a vehicle weighing several tons, it is inevitable that there will be adverse conditions such as displacement, flattening, tilting, and damage. In order to avoid displacement and other faults of the jack when lifting the vehicle, mechanical engineers have installed a solid positioning shaft at the intersection of the brackets to ensure that the brackets do not move and the vehicle does not tilt or overturn.

In a scissor jack, this solid positioning axis is not the main focus. Its important role should be placed after the screw, bracket, and lever, but it can ensure the stability and connectivity of the bracket, bury the central bite of the two brackets, and provide reliable support for the bracket when lifting heavy objects, ensuring that the jack is fully engaged in the vehicle lifting work.

Due to its mechanical nature, the scissor jack has a simple structure, small size, and does not rely on hydraulic oil. It can achieve the effect of lifting heavy objects by simply rotating the joystick manually. Therefore, it is more suitable for use in family cars. It can be placed in the trunk of a car, will not dirty the car, and can be very useful when replacing or repairing the car.