The screw jack has a clever structural design and a beautiful and generous body shape. After manually pressing the handle, the internal gear, turbine, worm, and lifting sleeve device can convert small manpower into huge mechanical force, which is transmitted to the top cover and then to the heavy object. It is a standard mechanical jack, and with it, we can easily complete the four major functions of lifting, pushing, squeezing, and stretching heavy objects.

The four major functions of a screw jack are completed in different ways of use. When we place the jack vertically, it can achieve the function of lifting heavy objects. When we place the jack horizontally, it can achieve the function of pushing and squeezing heavy objects. When we place the heavy object in the middle of the same heavy object, it can play the function of stretching or even separating heavy objects.