Electric wrench refers to an electric tool used to tighten and loosen bolts and nuts, and is a tool for tightening high-strength bolts. Used for the initial and final tightening of high-strength bolts with large hexagonal heads in the installation of steel structure bridges, factory buildings, chemical and power generation equipment, as well as the initial tightening of high-strength bolts with torsion shear type, and in situations where there are strict requirements for the torque or axial force of bolt fasteners.

Socket wrenches have high operational accuracy and can meet the requirements of mechanical manufacturing for assembly quality. Using a socket wrench is not easy to damage the edges of the nut and can effectively protect the surface of the screw and nut, making it safer and more reliable to use.