Screws are the main fasteners in mechanical equipment. Open wrenches are an important tool for processing, production and maintenance in the mechanical industry. This project is a revolution in traditional wrench tools, and it has the following advantages.
1. It works fast and works three to four times faster than a traditional wrench, faster than a quick wrench.
2. An open wrench can be used for 2 to 6 screws, while a double-ended wrench can only be used with 2 screws.
An open wrench is equivalent to 2-3 rigid  hands, which is equivalent to a movable wrench but can work quickly without adjusting the opening.
3. Long service life, bad, and the front quick wrench is easy to break.
4. The manufacturing process is simple and the cost is lower than the rigid one.