The hexagon cassette hydraulic torque wrench is designed to provide easy access to maintenance and fabrication bolting tasks, plus a good torque-to-weight ratio for loosening and tightening jobs. The unibody design has an integrated support arm and few moving parts for low maintenance and is constructed from corrosion-resistant materials. They are more precise, lighter weight and easier to use in tight spaces than the flogging /impact wrenches typically used in the pipeline industry. They offer high repeatability of ±3% accuracy. The tool also features high pressure (800 bar) double-acting hydraulic operation, which increases tool portability while reducing cycle times and the need for manual labour.