GearWrench 1/2"" Drive Certified Micrometer Torque Wrench 20-150 ft/lbs.

Torque accuracy of +/- 3% CW between 20% and 100% of wrench capability;Meets or exceeds ISO 6789 and ASME B107.300-2010 standards and specifications;36-tooth ratchet mechanism with a 10° swing arc allows you to turn fasteners in spaces other tools can't fit;Twist locking collar provides a secure locking mechanism for consistent performance;Scale markings are highly visible and easy to read