1/2" ERGOTORQUEprecision torque wrench 40-200 Nm. Accuracy +/-3%. Accuracy guaranteed for at least 5000 operating cycles. "Mushroom" type adapter head. Changing the direction is done by turning the "mushroom". The torque is fixed using a button on the handle. Two measuring scales Nm and lbf. The scale is easy to follow and use. With 30H 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.