1.Material: Alloy steel, aluminum alloy shell, corrosion and rust resistant, high strength hardness, wear and shock resistant. Features a sturdy torsion beam design for reliable long life and precision 2.Function: Torque wrench is a meter indicator for torque measurement of threaded fasteners that can be freely tested throughout the range. It can be used both directions, but the zipper cannot be loosened to prevent the display accuracy caused by overloading
