AP Fully Automatic Power Torque Tool, specifically engineered for heavy-duty nut running tasks involving large bolts. This pneumatic tool is equipped with an automatic gear shift mechanism, enabling swift high-speed provisional tightening that smoothly transitions to low-speed tightening for meticulous finalization. Despite fluctuations in air pressure, this tool ensures consistent torque output, guaranteeing reliable performance. Featuring a user-friendly torque setting knob and scale for effortless adjustment to desired torque levels, the tool simplifies the tightening process. Moreover, its residual torque easing mechanism facilitates easy attachment and detachment of sockets upon reaching the preset torque value. Safety is prioritized through a reaction arm designed to absorb reaction forces, ensuring secure operation, even in challenging working conditions. For enhanced operational precision, customizable error-proofing options are available upon request, underscoring the tool’s reliability and efficiency in meeting your tightening requirements.