The wrench measures in Newton Metres and has both touch sensation and audible indicators when preset torque value is reached. The 3/8\" drive unit has a 10 to 50 Nm torque handling capacity. Each wrench has its own certification number, like a car\'s VIN, and each tool is tested and certified for accuracy before it leaves the plant. Turning serious bolts? Here\'s a serious wrench ready for jobs where precision tightening is mandatory. 3/8\" Drive, 10-50 Nm, 0.25 Resolution, 13 3/4\" / 350mm length