PRODUCT INFORMATION The ACDelco Brand has been around well over 100 years and its name has become synonymous with quality & reliability. ACDelco power tools are built for people who make a living with their tools, day in and day out, and require exceptional sturdiness and reliability. ACDelco offers the most complete line of digital torque wrenches and adapters for professionals who require high precision measurement on torque (ft-lbs./Nm) and angle degree for their job. Please use selection guides to choose the right digital torque wrench with the right torque range for your application. FEATURES – Static torque measurement – Standard functions: torque setting, measurement setting, mode setting. – Operation in both clockwise and counterclockwise directions. – LCD display shows N-m (or kg-cm, in-lbs., ft-lbs.) measurements. – Audible torque confirmation by means of buzzer. Specifications – Model Number: ARM601-3 – Head Size: 3/8″ – Torque Range: (3.7 to 37 ft-lbs.) – High Accuracy: +/- 2% Clockwise, +/- 3% Counter-Clockwise (from 20% to 100% of max. torque) – Tool Weight: 2.8 lbs. (1.27 kg) – Battery: 4 AAA batteries (Not included) Specifications – Model Number: ARM601-4 – Head Size: 1/2″ – Torque Range: (14.8 to 147.5 ft-lbs.) – Tool Weight: 3.9 lbs. (1.77 kg) – Battery: 4 AAA batteries (Not included)