Torque Wrench, 1/2-Inch Drive, 40~300 ft.lb / 54~406 Nm by RebarTech

Half inch drive head, 40300 foot-pound, 72-tooth ratchet head. Click preset style, automatic torque lock, industrial precision, dual direction, dual scale. Pre-calibrated to +/- 3% accuracy with traceable serial number.
For nuts and bolts of cars, trucks, motorcycles, etc. Both for left-hand and right-hand thread.
Body length of 20 inches, weighs 3 pounds. Made of hardened and heat-treated chrome vanadium steel, chrome plating finish.
Automatic torque lock pull down red knob to rotate shaft, holding the knob untill torque setting completed. The red knob snaps back and locks the torque after released. During use, wrench emits a click that can be heard and felt when the preset value is reached.
Includes torque wrench, black protective case, accuracy calibration certificate and instruction manual.