1/2" ERGOTORQUEprecision torque wrench 80-420 Nm. Accuracy +/-3%. Accuracy guaranteed for at least 5000 operating cycles. Works in both directions, i.e. clockwise and anticlockwise. The torque is fixed with a button on the handle. Two measuring scales Nm and lbf. The scale is easy to follow and use. 72H pull mechanism. DIN. When the desired torque is reached, the wrench produces an audible and tangible click. Each wrench has a personal serial number for identification. Spare parts and KS Tools certified calibration with certificate are available for the wrench.