Non-Deforming Structure of Wrench in Manufacturing Process

A non-deforming structure of a wrench in a manufacturing process comprising:

• a handle including a rectangular cross section and one-piece extending to form an elongated body, the elongated body having four corners, and the handle including a first length, a handle width, and a handle thickness, wherein the handle width being 1.4 times to 2.6 times more than the handle thickness, the handle includes four elongated recesses extending along the four corners from a central portion of the handle respectively, wherein each of the four elongated recesses has a second length, a largest width, and a largest depth, each of the largest width and the largest depth of each elongated recess shrinks from an intermediate portion thereof to two ends of each of the largest width and the largest depth until connects with each corner, the second length takes up at least ⅓ of the first length, the largest width takes up 2/9 to 4/9 of the handle width, and the largest depth takes up 2/9 to 4/9 of the handle thickness;
• and
• at least one driving head arranged on at least one end of the handle.