About This

100–650 Ft-Lb Heavy-Duty Torque Range: This 3/4 torque wrench delivers a true 100–650 ft-lb working range, engineered for fleet maintenance, semi-truck wheel assemblies, construction equipment, and industrial machinery where standard torque tools fall short. Ideal for Class 8 truck lug nuts (450–500 ft-lb), loader pins, hydraulic fittings, and structural fasteners—helping prevent over-tightening, component damage, and costly downtime.
40cr Chromium Steel Strength: Built from heat-treated 40Cr chromium alloy steel, this heavy duty torque wrench offers higher tensile strength and fatigue resistance than conventional carbon steel tools. Designed to maintain stable torque output after repeated high-load cycles, even in demanding industrial and truck service environments.
Dual-Direction 45-Tooth Ratchet: Reversible 45-tooth ratchet mechanism with an 8-degree swing arc allows efficient operation in truck frames and industrial machinery. Engineered as a dual-direction torque wrench, the bidirectional ratchet head supports both clockwise and counter-clockwise directions. Featuring a quick-release button, it allows for rapid socket changes, significantly boosting efficiency in fast-paced motorcycle workshops or heavy equipment assembly lines.
39.4" Extra-Long Handle For Maximum Leverage: An extended 39.4-inch (100 cm) reinforced handle delivers superior leverage for high-torque fastening, reducing operator strain compared to shorter torque tools. The oil-resistant TPR + ABS grip ensures secure control with gloves, even in wet, oily, or outdoor jobsite conditions.
Professional Calibration & Storage System: This torque wrench 3/4 is factory-calibrated to ±3% accuracy and meets ISO 6789, GB/T 15729, and ASME B107.14M standards. Supplied as a torque wrench set with a heavy-duty blow-molded case and calibration certificate to protect accuracy during transport and storage—built for daily professional use in fleet and industrial maintenance.