The pneumatic torque wrench provides precise torque control with a repeatability of ± 5%, equipped with sensors and solenoid valve switches, achieving a repeatability of ± 2%. Pneumatic torque wrenches, with their small size, light weight, high output power per unit weight, can achieve high torque output, low reaction force, low environmental pollution, and low cost, are widely used in many fields such as aerospace, mining, petrochemical, railway, construction, heavy vehicle assembly and maintenance, heavy equipment loading and unloading, especially in product production assembly lines, especially in situations where high torque is required.

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.