Accuracy ± 2 % (6391-10: 6 %) of the set value (in the direction of operation). Usable by rotating the insert tool for right and left threads. Plug connection for receiving insert tools. Fixed adjustable value. Particularly suitable for use in industrial mass production. Setting the desired torque value with combination wrench 6399 in conjunction with HAZET testing devices 7901E, 7902E, 7903E, or another suitable device. All wrenches in this series (HAZET 6391-6392) are without adjustment scale. Comes with calibration certificate and serial number. DIN EN ISO 6789-2:2017. Made in Germany. Output: Insert square 14 x 18 mm. Dimensions / Length: 401 mm. Net weight: 0.69 kg. Nm min-max: 50 - 200 Nm. Tolerance: 2 %. Effective length of the torque wrench min-max l1 mm: 397.00 - 397.00 Nm. Operating force min-max kg: 12.8 - 51.4 kg. Dimension of the adjustment tool l2: 38.5 mm. Head thickness a: 23 mm. Head width b: 30 mm. No more back-turning: Long-term durability tests have shown that for HAZET torque wrenches in the 5000 and 6000 series, back-turning to the smallest scale value is not necessary.