Pincer tool with asymmetrical wedge

A pincer tool (10) for tightening a band clamp, the pincer tool (10) including a pincer head (12), the pincer head (12) comprising:

• a. a base element (14);
• b. two jaw elements (16a, 16b) pivotably attached to the base element (14) on a pivot point, wherein the jaw ele-ments (16a, 16b) each include a jaw end (20a, 20b) and a rear end (22a, 22b) on opposite sides of the pivot point;
• and
• c. a wedge element (26) mounted on the base element (14) so as to be movable in a longitudinal direction (D) by pressure of a pressurizing agent, wherein the wedge element (26) is configured to separate the rear ends (22a, 22b) of the jaw elements (16a, 16b) when being pressed in the longitudinal direction (D) so as to move each of the jaw ends (20a, 20b) by a stroke, wherein the wedge element (26) has at least one configuration in which the strokes by which the jaw ends (20a, 20b) are moved differ from each other.