The handles (1) of the tool, with different sizes and with constant ease of turning, enable the transmission of the maximum transmittable torque for the corresponding handle size. The corresponding handle of the individual tools can represent a non-proportional scaled modification of a handle basic shape which may have a thumb support (7) located at the head end (3), and to which are connected a quick rotation area (9), a force rotation area (11) and the handle end (5).
