Pneumatic screwdriver is a pneumatic tool used to tighten or loosen screws, nuts and other components.Pneumatic drivers are used in many industries such as auto repair, heavy equipment repair, product assembly (commonly called 'pulse tools' and designed for precise torque output), major construction projects, and anywhere else where high torque The output requires a pneumatic screwdriver, also known as a ratchet wrench and power tool combination, which is mainly a tool that provides high torque output with minimal consumption.It accelerates an object with a certain mass to rotate through a continuous power source, and then hits the output shaft instantly, so that a relatively large torque output can be obtained.Pneumatic screwdrivers are also called pneumatic screwdrivers, wind batches, pneumatic screwdrivers, pneumatic screwdrivers and so on.The principle of the pneumatic screwdriver is that the compressed gas (air) enters the gun body through the air pipe, and a gap is created by the touch pressure of the trigger.