Screw Jack Sets are mechanical devices used to lift or lower heavy loads with precision and control. They consist of a screw mechanism housed within a metal frame, often with a handle for turning the screw. The screw has a thread that allows it to grip a base plate or lifting pad, and when the handle is turned, the screw rotates, causing the lifting pad to move up or down.

Screw Jack Sets are commonly used in construction, manufacturing, and automotive industries for tasks such as lifting heavy machinery, adjusting the height of worktables or platforms, and supporting structures during building projects. They can be adjusted to lift loads with great precision, making them ideal for situations where accuracy is critical.