1/2 in. Drive Split Beam Torque Wrench, 50-250 ft-lb

A split beam torque wrench measures torque through a beam that flexes against the handle instead of compressing a coil spring, so there is no spring to fatigue and no need to back the setting down to zero after every job. That matters on a transmission bench, where the same wrench gets set and reset all day. This one is a 1/2 inch drive covering 50 to 250 ft-lb, which is the range most driveline fasteners live in: bellhousing-to-block bolts, torque converter-to-flexplate bolts, crossmember and transmission mount bolts, yoke and output shaft nuts, and transfer case mounting hardware.

Every wrench is calibrated to the ISO standard across its full range and ships with a serialized certificate of calibration listing the actual test results and conditions. Accuracy is within +/-4% in the clockwise direction. The setting is made with a flip-up lock on the handle and read through a window, and the back of the beam carries a laser-marked Nm conversion chart for metric specs.

The head is a 90-tooth flex ratchet. A single half-moon pawl keeps ten teeth engaged at all times so it will not skip under load, and the 10-degree flex lets the handle clear exhaust, crossmembers and frame rails when you are reaching up to a bellhousing bolt under the truck. Use it as a hand tool only: torque to spec, do not use it to break fasteners loose. Ships in a storage case.