The Rotary Torque Sensor is the ideal torque-auditing tool for testing the actual torque being applied on the assembly application. By connecting a rotary torque sensor between an electric or pneumatic tool and assembly application, you can monitor the torque being applied from the tool to fastener or bolt. Accuracy .25% of full scale and Bi-directional.Model:RTSX50FRange: 6.8 - 67.8 N.m, 5 - 50 lbf.ft, 0.7 - 6.9 kgf.m.Input Drive:3/8 F/SqOutput Drive:3/8 M/SqTool Length:2.9Tool Width:1.5Tool Height:2