This ACDelco Tools Digital Torque Adapter is a vital tool for any mechanic, converting your standard ratchet wrench into a highly accurate precision adjustment tool. It measures torque in real-time, displaying values in Nm, kg-cm, in-lb, or ft-lb on its back-lit LCD screen. The adapter features audible torque confirmation via a buzzer and vibration when the desired torque value is achieved. It offers easy setup with Set, Peak, or Trace modes and operates in both clockwise and counter-clockwise directions. Engineered with high-quality, industrial-grade materials, it ensures a long lifespan and reliable accuracy, fully calibrated to ISO 6789 standards. The adapter is power-efficient with an auto-shutoff feature after 1 minute of no use. Specifications include a 1/2" square drive, a torque range of 33.9-339 Nm (25-250 ft-lbs), and accuracy of CW ± 1.5%; CCW ± 2.5%. It comes with a carry case and an ISO 6789 Calibration Certificate. Ideal for automotive, motorcycle, and various industrial uses, it excels in tight working environments.