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

Compressed air is the most common power source, but there are also torque wrenches that use electric or hydraulic power, and batteries as power sources, which are also popular. Air impact wrenches are available in every standard ratchet socket driver size, ranging from small 1/4 "driver tool groups for assembly and disassembly to 3.5". Air impact wrenches are generally not suitable for fastening installation parts with ceramic or plastic components.