The HAZET 6391-10 torque wrench features a square drive of 9 x 12 mm and is designed for precise torque applications in industrial environments. With a compact overall length of 125 mm, this tool offers flexible functionality that simplifies handling in tight spaces. It ensures an accuracy of ±2% of the scale value in the working direction, making it suitable for quality-controlled assembly processes. The wrench accommodates interchangeable inserts through its socket connection system, providing a wide range of application possibilities. The torque values are preset and fixed; adjustment requires a double open-end wrench 6399 when used with HAZET testing devices 7901 E, 7902 E, 7903 E, or other compatible calibration devices. This model operates without an adjustment scale or signal activation while maintaining a slim design optimized for repetitive industrial production environments. Manufactured in Germany according to ISO 6789:2003, the wrench covers a torque range of 1-10 Nm. Its robust construction ensures reliable performance in demanding applications where consistent torque application is critical. The design prioritizes functionality and precision over adjustable features, making it particularly effective for standardized assembly procedures. The square dimensions of 9 x 12 mm accommodate various socket attachments, while the compact form factor enhances maneuverability in confined workspaces. This torque wrench represents specialized equipment for professional technicians and industrial applications that require exact torque specifications.