Pneumatic torque wrench is a handheld rotating pneumatic tool that can accurately set the torque for locking or disassembling nuts and bolts; The control part is achieved through a voltage regulator and power management system, while the mechanical part adopts a planetary gear reduction mechanism

Air impact wrench, also known as a combination of ratchet wrench and electric tool, is mainly a tool that provides high torque output with minimal consumption. It accelerates and rotates an object with a certain mass through a continuous power source, and then instantaneously collides with the output axis, thereby obtaining a relatively large torque output.