Hand tool for e.g. tightening and loosening of screw, has handle with trapezoidal cross sections at its ends, and formed in such a manner that its cross-section area continuously changes over length of handle

摘要

The tool has a handle (1) with trapezoidal cross sections at its ends, where the height of a narrow front side (1.2) of the handle is smaller than the height of a broad front side (1.4) of the handle. An inserted part (3) and a support are arranged at two openings (1.7, 1.9) in the handle. The cross section of the inserted part and support and the cross sections of the handle are identical in an area of the openings. The handle is formed in such a manner that its cross-section area continuously changes over the length of the handle.